Your search returned 41 essays for "Arrhenius":

Global Warming: Fact or Fable?

- Throughout history global warming has been on peoples minds. Global warming is “an increase in the volume of carbon dioxide in the atmosphere, contributing to a “green-house” or insulating effect that traps heat from the sun’s rays and raises the average temperature around the world” (Viotti and Kauppi p 543). Some causes of this environmental threat are: pollution of harmful gases in the atmosphere, deforestation, and technological advances. The effects to the human population, animals, and agriculture could be dangerous....   [tags: Climate Change, Argumentative Essay]

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The Transformation of CO2 to Linear Hydrocarbons Through Electrochemical Reduction

- 1. Introduction Due to the demand for petroleum products, the uncertainty of fossil fuel resources reported recently [6] and the greenhouse gas concern are the basis for this paper. The transformation of CO2 to linear hydrocarbons through electrochemical reduction was reported in [2,8,9]. C2H4 being of high yield but only on a small-scale. But by mathematical derivation of k = dM/nF and k = A ∙ e-Ea/RT presented in this paper which are formulated for the industrial production of the feed stock C2H4 for catalytic trimerization to 1-hexene for the cyclization to, C6H6, for the synthesis of 2-O-acetylsalicylic acid....   [tags: Chemistry]

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Sulphuric Acid Production Should Not Be Banned

- ... AB + CD → AD + CB Acids and bases can vary in strength. Their strength is determined by the amount of ionisation when reacted with water. Strong acids & bases are 100 % ionised in water, whereas weak acids & bases are far from 100 % ionisation. There are four types of neutralisation reactions that can occur between strong & weak acids and bases. 1. Strong acid + strong base  Salt + water e.g. HNO3 + LiOH  LiNO3 + H2O In this reaction, the products are always a salt and water. The salt, in a reaction between a strong acid & a strong base, always has a pH of 7.00....   [tags: environmental issues]

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Global Warming: Fact or Fiction?

- ... One author named Bill McKibben, wrote about the melting artic. "Here are some hard numbers about climate change: June broke or tied 3,215 high-temperature records across the United States. That followed the warmest May on record for the Northern Hemisphere – the 327th consecutive month in which the temperature of the entire globe exceeded the 20th-century average, the odds of which occurring by simple chance were 3.7 x 10-99, a number considerably larger than the number of stars in the universe.” ( McKibben 1)He is stating that due to temperatures rising is causing a rift in the environment....   [tags: environmental issues]

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A kinetic study of the reaction between aqueous sodium thiosulphate and hydrochloric acid

- A kinetic study of the reaction between aqueous sodium thiosulphate and hydrochloric acid Aim: To carry out a complete kinetic study of the reaction between aqueous sodium thiosulphate and hydrochloric acid: Equation: Na2S2O3(aq) + 2HCl(aq) 2NaCl(aq) + S(s) + SO2(g) + H2O(l) PART A To deduce the order of the reaction with respect to the concentrations of sodium thiosulphate and hydrochloric acid the experiment will be carried out at constant temperature and the time interval between the addition of HCl and the obscuring of the ink cross on white paper by the solid yellow sulphur precipitate will be measured for a constant volume of solution that uses 3 varying concentrations of Na2S2O3(...   [tags: GCSE Chemistry Coursework Investigation]

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The Activation Energy of Bromide ion and Bromate ion

- The Activation Energy of Bromide ion and Bromate ion To Determine the Activation Energy of the Reaction between Bromide ion and Bromate (V) ion in Acid Solution Objectives: By reacting Potassium Bromide and Potassium Bromate in the acid solution in varies temperature, we can then determine the Activation Energy of the reaction in different temperature through the equation:[IMAGE]. Questions: 1. Give an equation for the reaction between phenol and bromine. 2. What is the use of methyl orange in this experiment....   [tags: Chemical Reactions Reaction Rates Essays]

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Temperature's effect on Chemiluminescence

- Temperature's effect on Chemiluminescence Sitting by a fire on a fall night one would not think of a campfire as cold light. Could there be such a thing. “Cold light” is what the word luminescence means (Fluorescent Mineral Society, 1 of 2). Cold light can be seen at many different temperatures. Not only does cold light exist, but there are several types of luminescence including bioluminescence or “living light”, photoluminescence or fluorescence, “day-glow”, and phosphorescence which is delayed luminescence or “afterglow” (Fluorescent Mineral Society, 1 of 2)....   [tags: essays research papers]

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Pervaporative Separation of Methanol/Methyl tert-butyl ether Mixtures with Polyion Complex Composite Membranes of Sodium alginate/Chitosan

- ... (3) where Y is the permeate composition and X is the feed composition. Pervaporation separation index (PSI) was used to determine the membrane separation ability whenever there is a trade-off between permeation flux and separation factor [7]. It is calculated according to Eq. 4, PSI=J(α-1) (4) where α must be greater than 1 for separation to happen. The temperature dependence of the permeation rate can be expressed by Arrhenius type law as in Eq. 5, J=A_p exp⁡(E_p⁄RT)....   [tags: chemical and petrochemical industries]

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The Climate Change an Environmental and Social Issue in Nowadays Society

- Outline Introduction The climate change an environmental and social issue in nowadays society, the awareness of environmental protection is increasing very rapidly in science and construction industry. However, it is not a new phenomenon "more than 100 years ago, Swedish chemist Svante Arrhenius, theorized that higher level of Carbon Dioxide (CO2) would increase the atmosphere's heat-trapping effect and lead to higher surface temperatures" (IPCC, 2007). Nevertheless, the amount of the CO2 trapped in the atmosphere increased by as much as 30% since 1970, according to CEMEX....   [tags: temperature, pollution]

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Essay on Global Warming: The Effects of Climate Change

- Climate change is a long-term alteration in the statistical distribution of weather pattern over periods ranging from decades to millions of years. The world is currently experiencing drastic change in temperature. This change can be felt in the tropical climate areas where the weather is getting hotter and hotter every day. The change in global temperatures and precipitation over time is due to natural variability or to human activity. It is also caused by accumulation of greenhouse effects (Arrhenius, 1896)....   [tags: environment, pollution, global warming]

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The History of Chemistry Up to the XIX Century

- ... Early civilizations, such as the Egyptians and Babylonians amassed practical knowledge concerning the arts of metallurgy, pottery and dyes, but didn't develop a systematic theory.A basic chemical hypothesis first emerged in Classical Greece with the theory of four elements as propounded definitively by Aristotle stating that that fire, air, earth and water were the fundamental elements from which everything is formed as a combination. Greek atomism dates back to 440 BC, arising in works by philosophers such as Democritis and Epicurus....   [tags: chymistry, a scientific art]

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Climate Change: Global Emissions of Green House Gases

- There are growing concerns about climate change and the effect of ‘greenhouse gases’ (GHG) on the gradual increase in world temperatures over time, now commonly known as global warming. The ‘greenhouse effect’ means that ‘greenhouse gases’ such as water vapour (H2O), carbon dioxide (CO2), methane, nitrous oxide, and fluorocarbons insulate the Earth by absorbing heat from the Earth’s surface and reflecting it back into the atmosphere, acting in a similar way to a thermal blanket (Houghton, 2005)....   [tags: Environment, Global Warming, Climate Change]

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Does Increased Carbon Dioxide Emissions Cause Global Warming?

- The warming of the Earth’s atmosphere is one of the most important environmental issues in the world today. The volatile climate and changes of heat in the atmosphere are connected with an increase of large amounts of greenhouse gases in the atmosphere. It is often talked about that the primary reason why the global warming situation is increasing is due to the increase of the amount of greenhouse gases present in the Earth’s atmosphere, primarily the amount of carbon dioxide emissions. The increased carbon dioxide amount in the atmosphere that causes global warming is a cause of concern for many people because of its potential dangerous effects to the Earth and the environment....   [tags: greenhouse gases, climate change, global warming]

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Does Increased Carbon Dioxide Emissions Cause Global Warming?

- One of the most important and controversial environmental issues in the world today is the continual heating of the Earth’s atmosphere. It is felt that the increase of substantial amount of greenhouse gases being released into the atmosphere is associated with unpredictable climate and heat changes. It is often talked about that the primary reason why the global warming situation is increasing is due to the increase of the amount of greenhouse gases present in the Earth’s atmosphere, primarily the amount of carbon dioxide emissions....   [tags: greenhouse gases, climate change, global warming]

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The Great Debate on Global Warming

- The cause of global warming has been a debate between scientists and experts for numerous years. In fact, Svante August Arrhenius, a Swedish chemist, first predicted global warming would occur in 1896 (Harris 16). Researchers who agree it is naturally caused insist the greenhouse effect has many natural causes. Others agree that the cause of the Earth’s increase in temperature is just part of a continuous cycle. These researchers argue that solar activity plays a huge role in the issue of global warming....   [tags: Environmental Issues, Climate Change]

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Answers to an Advanced Mathematics Test

- Question 1 A function defines a relation between two sets of quantities in such a way that each quantity in the first set, which is called the domain, is related to a certain quantity in the second set, which is called the range. Thus in the linear function y = x, the (simplest) 3rd degree polynomial y = x3, the exponential function y = ex, and the (natural) logarithmic function y = ln(x), the set of possible values of the quantity x are the domain, and the set of the corresponding values of y are the range....   [tags: solving functions, logarithmic equations]

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Taking a Look at Global Warming

- For many people, global warming just means that the Earth is getting warmer. What they don’t realize is that global warming is so much more than that. No matter how you call it, “global warming” or “climate disruption”, its effects are all the same. Rising sea levels, wildfires, droughts, and storms are all results of these rising temperatures. And if humans keep pumping large amounts of carbon dioxide into the atmosphere, these natural disasters will be just the first of many. To better understand global warming, it is essential to know its history....   [tags: environmenal issues, climate change]

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Global Warming is a Disgrace

- Research shows that global warming has affected our environment for the worst. Global warming occurs when the temperature rises in the atmosphere. Researchers show the many causes and effects this issue brings to our environment. They take place due to natural and human occurrences. Has the environment been horribly affected by global warming. Studies show this question to be true, while providing statistics and evidence. More people should be aware of global warming and all the unconstructiveness that it brings to our world....   [tags: Climate Change, Argumentative Essay]

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Global Warming: A Human Cause?

- Global warming, just the thought of the words bring to mind scenes of melting ice, stranded polar bears and dying plants. In today’s society it seems humanity is always being blamed for the tragedies that seem to go along with this catastrophe. However, research has proven that humans are not the sole cause of global warming. In fact, some scientists say that the natural causes of global warming far outweigh the human causes. What exactly does global warming effect. The effects of global warming are spread across the entire world and can be broken down into three main areas, the first of which is heat waves....   [tags: Environment, Climate Change, Greenhouse Effect]

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Sudden Cardiac Arrest: Reliability Testing

- Reliability Testing – by Alexander Wassell 11-30-13 Executive Summary Sudden cardiac arrest is a health problem, claiming over 450,000 lives every year in the US. Sudden cardiac arrest is reversible, but only if treated within minutes with the aid of an electrical cardioverter shock via an automated external defibrillator (AED) or with an AED defibrillator. (Sudden Cardian Arrest, n.d.). Sudden Cardiac Arrest (SCA) is an electrical problem caused by electrical malfunction of the heart that results in no blood flow to the body and brain usually caused by an abnormal heart rhythm called ventricular fibrillation (VF).The most effective way to treat Sudden Cardiac Arrest (SCA) is through defibri...   [tags: healthcare, medicine, heart attack, AED]

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Planet Earth and Global Warming

- The planet Earth has been around for a really long time. Trees covered the grounds and all kinds of animals roamed the land. But this was before humans began to burn fossil fuels, before land was starting to be cleared, and before the climate began to change. The change in climate on planet Earth is called ‘global warming’. Some people do not believe that this phenomenon is really happening. Based on the facts, it really is happening. The surface of the Earth is warming rapidly and humans are a main cause....   [tags: fossil fuels, climate change, carbon dioxide]

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Damaging Changes to Our Environment

- The environment, defined as the natural world is relied upon for the existence of life on earth. These natural surroundings have always been and continue to be impacted by mankind, with the increasing human population and technology on a number of factors (Pragati. G, 2011 Link: 1). Some of these effects remain positive, which benefit the environment and the human race as a whole while others are negative, which damage or harm the environment, through little benefit to humans overall. These damaging changes include: mass deforestation, the diminishing amounts of species: pollution and climate change....   [tags: deforestation, air pollution, water misuse]

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Global Warming

- Pollution in our world is leading to increased global warming. Global warming is a problem that if it doesn’t effect us, it will effect all future generations. Global Warming is a problem that all of us can solve, and it should be solved through the work of our community. Global Warming is caused by the Greenhouse Effect. The Greenhouse effect causes the sun’s rays to come in the earth’s atmosphere, and when it bounces back, more and more of the sun’s rays stay in the Earth, heating up the average global temperature....   [tags: Causes and Effects of Climate Change]

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Decomposing Hydrogen Peroxide

- Introduction The purpose of this experiment is to gain an understanding of factors which influence the rates of reactions. Several experiments will be conducted using various combinations of concentrations of the reactant (hydrogen peroxide) and a catalyst (potassium iodide), as well as one pairing in which a change in temperature is the only variable. Data collected will be used to determine the rate law, rate constant, and activation energy for each of the reactions Hydrogen peroxide (H_2 O_2) naturally decomposes into water (H_2 O) and oxygen gas (O_(2 )) according to the following balanced equation....   [tags: Chemistry]

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The Maxwell-Boltzmann Distribution

- Introduction In chemistry, catalyst is a substance which increases the rate of reaction with itself does not combine in reaction. The aim of this essay is researching more about catalyst, for instant how does catalyst work and the example of catalyst. Also, this research might useful for science international foundation students for support revision. First of all, this essay will describe Maxwell Boltzmann distribution diagram and give the meaning of collision theory, then it will discuss on Activation Energy....   [tags: Chemistry, Catalyst, Substance, Reaction]

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Analyzing Climate Change

- Half of the United States population traveled out side of the borders in 2012. Ten present of the population traveled to the Carrabin in 2012 (United States). Traveling is a way of life for some and a major influence on the United States culture. Despite the recent recession traveling has increased in popularity among Americans. Some believe the increase in popularity for traveling is a result of global climate change. Global climate change refers to the natural change in global temperatures over time....   [tags: gobal warming, environmental issues]

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Investigating the Kinetics of the reaction between Iodide ions and Peroxodisulphate (VI) ions (entire plan)

- PLANNING Investigating the Kinetics of the reaction between Iodide ions and Peroxodisulphate (VI) ions By the use of an Iodine clock reaction I hope to obtain the length of time taken for Iodine ions (in potassium iodide) to react fully with Peroxodisulphate ions (in potassium Peroxodisulphate). I will do three sets of experiments changing first the concentration of iodide ions, then the concentration of Peroxodisulphate ions and finally the temperature of the solution in which the reaction is taking place....   [tags: essays research papers]

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The Effect of Substrate Concentration on the Rate of Activity of the Enzyme Catalase

- The Effect of Substrate Concentration on the Rate of Activity of the Enzyme Catalase Background Information: Enzymes are biological catalysts that increase the speed of chemical reactions without undergoing any physical change. They are neither used up in the reaction nor do they appear as reaction products. All enzyme catalysed reactions are reversible. Enzymes effectively lower the amount of activation energy required for chemical reactions to start. Some enzymes weaken covalent bonds within the substrate molecule, whereas in other cases this lowering of the activation energy seems to take place because the enzyme holds the substrate molecules in a particular p...   [tags: Papers]

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The Rate of Reaction Of Metals with Acids

- The Rate of Reaction Of Metals with Acids Introduction In this investigation I will be looking at the rate of reaction between a metal, which will be magnesium ribbon, and an acid. The acids will either be hydrochloric, ethanoic, sulphuric or phosphoric acid. I will be finding out if the activation energy changes depending on whether a strong or weak acid is used. I will also be investigating whether or not there is a change in the order of reaction if a dibasic acid is used instead of a monobasic acid....   [tags: GCSE Chemistry Coursework Investigation]

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A Historical Perspective of Global Warming

- A Historical Perspective of Global Warming Global warming is a problem that has just recently come to the forefront of world affairs. Within the last fifteen to twenty years, we have known that this problem was not only possible, but likely; but nothing has really gotten done. The origin of global warming is often disputed, and is being debated all over the world today. Whatever the cause may be, historians believe this is a problem at least 100 years in the making. Since the Industrial Revolution, we have been on a fast track to pollute Earth to a way-of-life-altering extent....   [tags: History Environment Ecology Essays Papers]

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Political History of Global Warming

- Political History of Global Warming There is a lot of ambiguity surrounding the theory of 'global warming' and the proper political response to it. At the very center of the scientific debate on the variability of global climate is to what extent human activities influence climate change. Another unforeseeable is whether the potential impacts of climate change will be harmful or beneficial for humans, managed agriculture, and natural ecosystems. Some question the authority with which current scientific data has been given in international negotiations on the regulation of greenhouse gases....   [tags: Global Warming Climate Change]

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Sintering in Fluidized Bed

- Sintering in Fluidized Bed Processes for cleaner and more efficient energy generation from feed stocks such as coals, lignites, peats, and waste liquors use fluidized beds that are operated at high temperatures and pressures. These processes involve systems that are multi-phase and have complex chemical reactions. Research work has tackled a number of aspects, including mechanical engineering aspects of the reactors, reaction chemistry and products, characterization and physical properties of the ash, fouling by ash deposits and the phenomenon of defluidization by agglomeration or sintering of the ash particles....   [tags: essays papers]

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Hybrid Photopolymerization

- Hybrid photopolymerization has the potential for solving the oxygen inhibition and moisture problem that plagued the free-radical and cationic photopolymerization reactions respectively. The problem, however, with the hybrid system is the deficiency in the fundamental knowledge of the reaction in the system. This project tends to address these deficiencies by studying hybrid systems in order to understand how experimental variables affect oxygen, moisture and alcohol sensitivity. This understanding will be archived by the following objectives; Determine the kinetic rate constants for the hybrid systems....   [tags: Chemistry]

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Global Warming

- Global warming was first mentioned by ‘Svante August Arrhenius in 1896’, but in ‘1753, Joseph Black discovered carbon dioxide’ and in ‘1827, Jean-Batiste Fourier suggested that atmospheric effect kept the earth warmer than it would otherwise be’, ( n.d. A history of climate change). Since this time, reports, and study have be done with graphs to show the impact of global warming and what could happen to our planet. In 1979, the first conference was held this was called ‘International climate science’ it called on governments to ‘foresee and prevent man-made changes in climate’....   [tags: History, Effects, CLimate Change]

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Global Warming

- Global warming first mentioned by ‘Svante August Arrhenius in 1896’, but in ‘1753, Joseph Black discovered carbon dioxide’ and in ‘1827, Jean-Batiste Fourier suggested that atmospheric effect kept the earth warmer than it would otherwise be’, ( n.d. A history of climate change). Since this time, reports, and study have be done with graphs to show the impact of global warming and what could happen to our planet. In 1979, the first conference was held this was called ‘International climate science’ it called on governments to ‘foresee and prevent man-made changes in climate’....   [tags: History, Climate Change, Carbon Dioxide]

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Rates of Reaction

- Rates of Reaction What is a rate of reaction. The amount of change of a product or reactant in a given time. What affects the rate. a) Concentration of solution (more likely to collide as more in same vol.) b) Temperature (increases speed of molecules, more exceed EA) c) Surface area (same as concentration) d) Pressure of gasses (same as conc.) e) Catalyst (guide particles to correct orientation + lowers EA) f) Others e.g. light(light = increase in speed of particles) How are rates altered....   [tags: GCSE Chemistry Coursework Investigation]

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Global Warming

- Global Warming Mission Plan a. Analysis of the Problem 1. History of the Problem      Some scientist's have been concerned since 1896 about what might happen if there were 5.5 billion tons carbon dioxide in our atmosphere. In 1961 a British scientist did an experiment showing that the carbon in the air was absorbing some of the sun's radiation. Afterward a Swedish scientist, Suante Arrhenius, found out if the radiation of the sun was trapped in the carbon dioxide the temperature of the earth would increase by 1-2 degrees....   [tags: Environment Global Warming Climate Change]

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Reaction Kinetics

- Reaction Kinetics: Rate of Reaction Of Tertiary-Butyl Bromide Purpose: The purpose of this experiment is to find the order of t-BB graphically, to find the k (rate constant) at 0˚ C and at room temperature, also to find the Ea (activation energy). Principles: Several different chemical kinetic principles were used in this experiment. The reaction rates of this chemical equation were determined experimentally. This then allowed the reaction mechanisms (i.e. orders of each component, rate constant, etc.)....   [tags: essays research papers]

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Global Warming

- Global Warming First discovered at the turn of the century by the Swedish scientist Arrhenius, global warming was initially thought to only cause increased greenhouse gases from coal combustion emissions. It wasn’t until fifty years later that the real causes and effects of global warming would be discovered. A British scientist by the name of Calendar correlated the 10% increase of atmospheric Carbon Dioxide between 1850 and 1940 with the observed warming of northern Europe and North America, which began in the 1880's....   [tags: Environmental Global Climate Change]

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Chemistry: Acids and Base Theories

- ... He said, Aqueous solutions of acids give H+ ion. For example: NaOH → Na+ + OH−and Aqueous solutions of bases give OH- ion for example NaOH → Na+ + OH− Second description of acids and bases is found by Danish chemist J.N. Bronsted and English chemist in T.N LOWRY in 1923. According to them matter that gives protons are acid and matter that receive proton is base. With this description matters that aren’t thought to be an acid or base is now classified as an acid or a base. For example Boron trifluoride is act as an acid and forms a complex by receiving couple of electrons of Trimethylamine....   [tags: lewis’s electron theory ]

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Determining the Enthalpy of Neutralisation for Three Acids

- Determining the Enthalpy of Neutralisation for Three Acids [IMAGE]Determine the Enthalpy of Neutralisation for the following there Acids, H2SO4, HNO3 andH2SO4 Introduction Acid and bases have a very important property that is that they are able to cancel each other out when mixed together in the right proportions, this reaction is called a neutralisation reaction, which can be an exothermic reaction . The standard enthalpy of neutralisation is the heat absorbed per mole when an acid and a base react to form water under standard conditions....   [tags: Papers]

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Your search returned 41 essays for "Arrhenius":