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Acid rain effects on aquatic ecosystems
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The nature of this acidic environment The world around us is composed of all acids and bases including the ones in air and water. As humans, we come into contacts with acids and bases each day. For example, vinegar, lemon juice and vitamin C are acids that are used everyday. Testing the pH is important at it determines whether the substance is a strong or weak acid/base. Indicators such as methyl orange, bromothymol blue and litmus are examples of indicators that are used to test the pH of swimming pools as acids from the human body and acid rain could change the pH in the pool. Also, they are used to test the pH of aquarium water and ensure that the pH doesn't exceed or fall below the pH ranges that fish can survive in. A typical fish can have better quality life in pH ranges between 7.0 and 8.0. Acidic oxides There are 3 acidic oxide gases that are present in the atmosphere: Carbon dioxide (CO2) Sulfur dioxide (SO2 Nitrogen dioxide (NO2) Sources of carbon dioxide Carbon dioxide is a gas which is part of the carbon cycle. The combustion of fossil fuels...
Carbon Dioxide (CO2) is a colorless gas, which was first discovered in 1577 by Van Helmont who detected it in the products of both fermentation and charcoal burning. CO2 is used in solid, liquid, and gas forms in a variety of industrial processes. These include: beverage carbonation, dry ice, welding and chemicals manufacturing. It is produced by the combustion of all carbonaceous fuels and can be recovered in an abundance of ways. It is widely used today as a by-product of synthetic ammonia production, fermentation, and from flue gases by absorption process. CO2 is also a product of animal metabolism and is important in the life cycles of plants and animals. It is present in the atmosphere only in small quantities (.03% by vol.)
This pH homeostasis lab is used to show how acids and bases react when submerged into different solutions - water, a homogenate, and a buffer. A homogenate is blended up water and the cell tissue. They are used to show how much pH the cells have when adding an acid or base to it. A buffer is a solution that doesn’t change it’s pH level, even when acid or base is added to it. They are important to help all living things maintain homeostasis.
Most substances fall on a scale ranging from the most acidic to the the most basic with neutral substances falling somewhere in the middle. Scientists call this the pH scale. pH levels are measured in numbers,0 to 14. The closer a substance is to zero the more acidic it would be. The closer to 14 the more basic a substance would be.Now what defines an acid and a base, one might ask? There are three ways of defining acids, each singling out a specific property. The first theory is the Arrhenius Theory with states, that an acid is a substance that produces the ion H+ when in a water solution, while a base is a substance which produces the ion OH- when in a water solution. Examples of an Arrhenius acid are HCl and HNO3. Examples of an Arrhenius base are NaOH and AlOH3.
The sought to determine the effects of mixing various levels of acids and bases to see which combination would have the most explosive reaction, and measure the resulting pH levels. I did this by testing an assortment of different pH levels of acids and bases, mixing them together and measuring the results. Most of the experiments resulted in a pH neutral solution, except for the Sulfuric Acid and the Sodium Hydroxide. By far, the Sulfuric Acid was the most explosive, followed by the Citric and Acetic acid.
There were many things that I learned in Module 7 . Some of them where: what is the difference between an acid and a base; what is pH; what is equilibrium, what is Le Châtelier’s principle; and what is oxidation. Here are some of the things that I learned in lesson 07.01 (Acids and Bases) and lesson 07.02 (Acid-Base Reactions).
1) Title of Book: The Electric Kool-Aid Acid Test 2) Author: Tom Wolfe 3) The grounds on which Thomas Wolfe created this documentation of the Merry Pranksters is that he attempts to re-create both the mental and physical atmosphere of their adventure and exploration across America. 4) Specific evidence in supporting the aforementioned thesis can be found in the “Author’s Note” section of the book but also in the writing style used to develop this masterpiece. Writing in a basic journal style, Wolfe documented the extraordinary life style lived by the Pranksters through personal experiences with them as well as transcribing their adventures that were captured on both film and tape. 5) Tom Wolfe, with his journalist style of transcribing the current events, seems hard-pressed to be categorized into a specific group of historians, but he can be most noticeably associated with the New Left. This is because The New Left dealt mainly with the social and economic movements of the 1960’and 70’s, and the Psychedelic movement Wolfe documented so well was definitely a social movement of the infamous 1960’s. 6) Tom Wolfe grew up in the land of Richmond, Virginia. He eventually graduated from Washington and Lee University, and later received a doctorate in American Studies from Yale. Besides being a novelist, Wolfe has worked as a reporter for the Springfield Union, The Washington Post, and the New York Herald Tribune. Some of his writings have also appeared in New York Magazine, Esqu...
The emission of carbon dioxide has contributed to 80% to the heating of the earth atmosphere. Carbon dioxide is produced due the burning of fossil fuels such as natural gas, coal and oil. The burning of fossil fuel is very important in our society today, because it is used for cooking, used to produce electricity, for heating, for cooling and also for transportation. The industrialization has led to the use of fossil fuel for running machines and driving cars. The building of fossil fuel contributes towards 80-90% of the carbon dioxide we find in our atmosphere today. When the ecosystems are altered and vegetation is either burned or took out, the carbon stored in them is relinquished to the atmosphere as carbon dioxide (What causes global climate change, 2005). Methane is another gas being produced in the process which all have served to increase the greenhouse effect in our atmosphere. Methane is produced from the cultivation of rice, from the burning of coal and from cattle, it has increased by 145% due to human
Carbon dioxide or CO2 is known to be one of a number of gases that are astonishingly transparent to the visible light that falls on the Earth from the Sun, but it absorb the infra-red radiation that emitted by the warm surface of our Earth, to prevents its loss into space. Moreover, CO2 has varied considerably and this affected the Earth’s temperature. Most common source of this CO2 is known as the fossil fuel. Fossil fuels are primarily coal, hydrocarbons, natural gas, or fuel oil that formed from the remains of the dead plants and also animals. The burning fossil fuel that has been created by humans is the largest source of emissions of the carbon dioxide.
Acid-Base balance is the state of equilibrium between proton donors and proton acceptors in the buffering system of the blood that is maintained at approximately pH 7.35 to 7.45 under normal conditions in arterial blood. It is important to regulate chemical balance or homeostasis of body fluids. Acidity or alkalinity has to be regulated. An acid is a substance that lets out hydrogen ions in solution. Strong acid like hydrochloric acid release all or nearly all their hydrogen ions and weak acids like carbonic acid release some hydrogen ions.
Humans are largely responsible for releasing these gases into the air. Gases like methane is used by farmers in practices such as livestock manure management. Carbon dioxide is released mostly from burning fossil fuels such as coal, oil and gas. Cutting up trees (deforestation) prevents the conversion of CO2 into Oxygen in our planet through a process called photosynthesis.
I decided to experiment with pHs within the range pH 2 to pH7, as I
Acid-Base Titration I. Abstract The purpose of the laboratory experiment was to determine equivalence. points, pKa, and pKb points for a strong acid, HCl, titrated with a. strong base, NaOH using a drop by drop approach in order to determine. completely accurate data. The data for this laboratory experiment is as follows.
Carbon Dioxide is a colorless, odorless gas that occurs in small quantities in the earth's atmosphere naturally. The earth's ocean, soil, plants and animals release CO2. The formula of Carbon Dioxide is CO2. The CO2 molecule contains 2 oxygen atoms that each share 2 electrons with a carbon atom to form 2 carbon - oxygen double bonds. The atoms are arranged as so (OHT). This is called a 'linear molecule'.
The color of anthocyanin depends on acidity, and thus it may serve as a pH (acid/base) indicator (Figure II). pH is a quantitative measure of the acidity or basicity of solutions. Numerically, the pH of a solution is defined as the negative logarithm (base 10) of the hydronium ion (H3O+) concentration. If the pH is less than 7 the solution is acidic, if it is greater than 7 the solution is basic, and if it is 7 the solution is neutral. The higher the pH, the more basic the solution, and the lower the pH, the more acidic the solution. Figure II illustrates the relationship between color and pH for anthocyanin pigments extracted from red cabbage or other sources.
The carbon dioxide, also known as a greenhouse gas, remains in the air trapping heat and gradually warming the planet. Other greenhouse gases such as: methane, nitrous oxide, and water vapor also contribute to this slow warming. According to Live Science, The state of these gases being trapped is called the greenhouse effect, which is one of the leading causes of global warming (Lallanillia). All the gases are created differently and have different effects on the earth.