Neutralisation of Stomach Acid Investigation Aim: To find which tablets are best for neutralising excess stomach acid. Introduction: Prediction: I predict that the indigestion tablet with the most carbonates will need the most acids for it to go neutral. The tablets with the least carbonates will need the least amount of acid for it to go neutral. So the best cure for neutralising a build up of stomach I would think would be the tablets with the least amount of carbonates because
Sodium Thiosulphate and Hydrochloric Acid Reaction Investigation Aim To see the effects of concentration on the rate of a reaction between sodium thiosulphate and hydrochloric acid. Background information The collision theory briefly: For a reaction to occur particles have to collide with each other. Only a small percent result in a reaction. This is due to the energy barrier to overcome. Only particles with enough energy to overcome the barrier will react after colliding. The
Investigation of the reaction between hydrochloric acid and marble chips A chemical reaction is when two or more substance called reactants are chemically bonded to form a new product, as a result of the process, for a reaction to take place, the particles must have enough kinetic energy to collide and form new bonds , this is called a successful collision. The minimum amount of energy needed for a successful collision is activation energy, which is “The energy that an atomic system must acquire
Investigation into the Reaction Between Marble Chips and Hydrochloric Acid Planning ======== Introduction ------------ In the reaction between marble and hydrochloric acid, calcium carbonate particles from the marble react with the hydrogen chloride particles in the hydrochloric acid producing calcium chloride, water and carbon dioxide. The formula for this reaction is: CaCO3 (s) + 2HCl (aq) ® CaCl2 (s) +H2O (l) + CO2 (g) Choosing the variable ---------------------
An Investigation on the Rate of Reaction between Sodium Thiosulphate and Hydrochloric Acid Chemical Background When sodium thiosulphate is mixed with dilute hydrochloric acid it makes a cloudy liquid of sodium chloride, water, sulphur (this makes the liquid cloudy), and it gives of the gas sulphur dioxide. A precipitate of sulphur is made. Sodium + hydrochloric = sodium + water + sulphur + sulphur Thiosulphate acid chloride
Investigation: How does the concentration of acid affect the rate of reaction? The aim of this investigation is to test how concentration affects the rate of reaction. My prediction for my investigation is that the higher the concentration, the faster the reaction will be. My reason behind my prediction is: · The higher the concentration, the more particles there are which will collide with enough energy to overcome activation energy, which is explained as the collision theory. Collision theory
Investigation of How Temperature Affects the Rate of Reaction of Sodium Thiosulphate and Hydrochloric Acid I am going to investigate how temperature affects the rate of the reaction of sodium thiosulphate and hydrochloric acid. WORD EQUATION Sodium thiosulphate + Hydrochloric acid [IMAGE] Sodium chloride (salt) + Sulphur + Water + Sulphur dioxide CHEMICAL EQUATION Na2S2O3 + 2HCl [IMAGE] 2NaCl + S + H2O + SO2 The temperature
Investigation to show the effect of different concentrations of Dilute Sulphuric Acid on Zinc Aim To find the effect that different concentrations of dilute sulphuric acid have on the rate of reaction between the acid and zinc. Chemical Equation Zn + H2SO4 H2 + ZnSO4 How my investigation is a fair test In this experiment only one factor is to be changed to make it a fair test, the concentration of the sulphuric acid, while all others must remain constant. I will also use the same amount of
Investigation to find out if changes in concentration of acid affect the rate of a chemical reaction PLANNING – Title – Investigation to find out if changes in concentration of acid affect the rate of a chemical reaction. Introduction – The rate of reaction can be defined as the speed at which a reaction takes place. The rate of reaction tells us how quickly a chemical reaction has happened. There are many things that can affect the rate of reaction, (some of these are shown in figure 1 below
An Investigation to see How the Concentration of Hydrochloric acid affects the Rate of Reaction with Calcium Carbonate I am going to investigate how concentration of hydrochloric acid affects the rate of reaction between hydrochloric acid and indigestion tablets which contain mainly calcium carbonate. From my background knowledge from class work and books, (see references) I have found out that if you increase the concentration of hydrochloric acid, the rate of reaction will increase and
The purpose of this investigation is to record the amount of time taken for a reaction to occur when sodium thiosulphate is mixed with hydrochloric acid. The equation for this reaction is: Na2S2O3 + 2HCl → 2NaCl + S + SO2 +H2O Sodium thiosulphate (Na2S2O3), after reacting with Hydrochloric Acid (HCl) produces yellow sulphur, which is the cause of the solution becoming cloudy. The amount of time taken for the reaction to occur is known as the reaction rate. The rate of a reaction can be commonly
Thiosulphate and Nitric Acid Planning Aim The aim of this investigation is to find out and observe how the temperature affects the rate of reaction. I am going to investigate the rate at which the solutions of nitric acid (HNO³) and sodium thiosulphate (Na²S²O³) turn cloudy (when mixed together), when the temperature is changed. Variables In this investigation I will only have one variable: § The temperature of both solutions (sodium thiosulphate and Nitric acid), so that I will
...ed during food processing, including heat, salt, an activated lactoperoxidase system, and surface-active agents (Leyer and Johnson, 1993). In the present investigation, enumerate the bacterial population on chicken meat which collected in different location and control of E. coli and S. aureus by acetic acid, lactic and citric acid. AIM AND OBJECTIVE The objective of the study can be summarized as follows. 1. Isolation and identification of E. coli and S. aureus from poultry meat
Literature Research Paper Introduction/General Background For my research project, I am researching if tea stains your teeth. The factors involved in this investigation will be researching egg shells, what they are made of, and their similarity to teeth. I will also be researching tea, and what it’s made of, and how it may or may not stain teeth/egg shells. The variables that I will be investigating will be types of tea, and the length of time the shells are spent in the tea. I am conducting this
Does Concentrated Acid or Diluted Acid React Faster? Plan I am going to carry out a reaction between Magnesium ribbon and Hydrochloric acid. The aim of this investigation is to work out which reacts faster, concentrated acid or diluted acid. I will judge if the reaction is fast or slow by observing the bubbles which occur during the reaction and also observe if the Magnesium has disappeared. Only the concentration of the acid will be changed - the Magnesium is a solid. Magnesium +
Investigating the effect of temperature on the reaction between Sodium Thiosulphate (Na2S2O3) and Hydrochloric Acid (HCl) Planning and Prediction Apparatus List Conical Flask 3 measuring cylinders Sodium Thiosulphate (Na2S2O3) Hydrochloric Acid (HCl) Thermometer Stop watch When sodium thiosulphate reacts with hydrochloric acid, the solution becomes opaque. I will investigate how the rate of this reaction is affected when the experiment is carried out at different temperatures. The reaction that
common steriliser is chlorine, in the form of hypochlorite ions (OCl-) and hypochlorous acid (HOCl). However sunlight causes drastic decomposition of these chemicals, thus methods to protect chlorine from sunlight have been created for pools. Some of these include pool covers, or chemical stabilisers which combine with the free hypochlorite ions to reduce decomposition. The most common stabiliser is isocyanuric acid ((CONH)3), added until a concentration of 50mg/L is reached. An experiment was devised
The Factors Affecting the Rate of Reaction of Indigestions Tablets With Acid Planning, To start the investigation I thought about what affected rates of reaction. I managed to come up with 4 ideas: 1 Surface area 2 Temperature 3 Concentration 4 Mixing of the substances (stirring) I decided to do 2 different preliminary experiment so I could chose the best variable to investigate and see what equipment was necessary to provide us with an accurate set of data. Our first Preliminary
Rate of Reaction of Dilute Hydrochloric Acid and Sodium Thiosulphate To investigate the change in rate of reaction between DILUTE HYDROCHLORIC ACID and SODIUM THIOSULPHATE as the concentration varies. PLAN A chemical reaction takes place over a specific period of time i.e. which is the time for the reactants to be formed into the products. If the reactants take a relatively short time to form the products, the reaction is known as a FAST one. The RATE of that particular reaction is
Contents No Items Pages 1 Contents 1 2 Introduction 2 3 Toxicants formed during food processing 3~9 3.1 Acrylamide 3 3.2 Polycyclic Aromatic Hydrocarbons 4~5 3.3 Nitrosamine 5~6 3.4 Benzene 7 3.5 Chorinated compounds 8 3.6 Amino acid Pyrolysates 9 4 Conclusion 10 5 References 11 Introduction For most foods, the faster it spoils, the healthier it is. However, in the globalisation and rapid invention of technologies plus the shifting eating habit of mankind, we need our food to last for