The Reaction Between Hydrochloric Acid and Sodium Thiosulphate Introduction ============ I am investigating how different concentrations of thiosulphate and distilled water in ratio to 10cm³ of hydrochloric acid affect the rate of reaction. I will also investigate if there will be a change in temperature after the reaction has occurred. I will know when the reaction is taking place as the solution turns from clear to opaque. The reaction that takes place is as follows: - Sodium + Hydrochloric à Sulphur + Sulphur + Sodium + Water Thiosulphate acid dioxide chloride Na S O + 2HCl à S + SO + 2NaCl + H O ------------------------------------ The reaction will have finished when the solution has turned completely opaque and it is visible that the solution is not turning increasingly more so. At atomic level, at this point all of the particles in the solution will have stopped colliding. My prediction I predict that as the concentration of distilled water to sodium thiosulphate increases, the rate of reaction will take longer as the distilled water is making the solution weaker. This is due to the fact that there will be less fruitful collisions between sodium thiosulphate and the hydrochloric acid. This can be easier described by using the following diagrams: - Here there are many successful collisions between the sodium thiosulphate and the hydrochloric acid because there is a large volume of sodium thiosulphate in ration the volume of water, meaning that the water cannot dilute the solution to a great enough extent. Here there is no where near as many successful collisions as seen previously. This is because there is a larger volume of water in ration to the volume of sodium thiosulphate, meaning that there will not be as many sodium thiosulphate molecules that would be able to collide successfully. Due to this collision theory, the higher the concentration of sodium thiosulphate, the quicker the rate of reaction because there will be more successful collisions happening in a shorter space of time.
In a more concentrated solution, collision occurs more often because there are more molecules. The more often these molecules collide, the greater the chance they having of reacting. This means that the rate of a chemical reaction will increase if the concentration of reactants is increased. However, in this experiment, I'm going to do an investigation to find out how amylase concentration affects the rate of starch Hypothesis:
Experiment is to investigate the rate of reaction between hydrochloric acid and calcium carbonate Hydrochloric acid + Calcium Carbonate Þ Calcium Chloride + Water + Carbon Dioxide 2HCl (aq) CaCo3 (s) CaCl2(s) H2O (aq) CO2 (g) There are a number of variables in this experiment and these are listed below as input variables and outcome variables.
Paragraph 2: It is believed that as the temperature of the water increases the time it will take for the tablet to dissolve will decrease. This is believed since the temperature there will be more energy allowing the particles to get together and form a reaction allowing the ta...
To see how the concentration of acid affects the rate of reaction in the reaction between hydrochloric acid and sodium thiosulphate. Planning :.. Aim To see how the concentration of acid affects the rate of reaction in the reaction between hydrochloric acid and sodium thiosulphate. Background: The 'A' All reactions occur because of the particles that make up the reactants will collide, and if they have sufficient energy, react. forming or breaking bonds of the.
more of the reactants to react or the time it takes to produce a new
The rate at which Alka-Seltzer tablets reacts with water Statement of problem The aim of the experiment is to find out the rate at which Alka-Seltzer tablets react with water. The input variable that I will change is temperature. The output variable will be measured by the time it takes for the Alka-Seltzer tablets to dissolve.
However, in order to measure the rates of reaction, sodium thiosulphate and starch are added. Sodium thiosulphate is added to react with a certain amount of iodine as it is made. Without the thiosulphate, the solution would turn blue/black immediately, due to the iodine and starch. The thiosulphate ions allow the rate of reaction to be determined by delaying the reaction so that it is practical to measure the time it takes for the iodine to react with the thiosulphate. After the all the thiosulphate has reacted with the iodine, the free iodine displays a dark blue/black colour with the starch. If t is the time for the blue/black colour to appear, then 1/t is a measure of the initial rate.
The aim of my investigation is to find out whether the increase of temperature increases the rate of reaction between the two reactants of Sodium Thiosulphate and Hydrochloric acid. I will then find out and evaluate on how temperature affects this particular reaction. Factors There are four main factors, which affect the rate of reaction that are considered as variables for the experiment I will be doing, they are the following: Molecules can only collide when two of them meet together.
Neutralization Experiment AIM:- To investigate how heat is given out in neutralizing sodium hydroxide (NaOH) using different concentrations of Hydrochloric Acid. Background Information:- Substances that neutralize acids are called alkalis. An acid is a substance that forms hydrogen ions (H+ ) when placed in water. It can also be described as a proton donor as it provides H+ ions. An example of an acid is hydrochloric acid (HCl), Sulphuric acid (H2SO4) etc.
from 10cm to 50cm to make it easier to see the difference in a graph.
The main aim of my experiment is to find the rate of reaction over time taken and the rate of reaction when the concentration of hydrochloric acid increases or decreases. I will try to make my experiment as accurate as I can. I will carry out three trials to make my test fair. I will also use the correct equipment for accurate results.
* Concentration - I will try my best to use all the acid from the
My aim in this piece of work is to see the effect of temperature on the rate of reaction in a solution of hydrochloric acid containing sodium thiosulphate. The word equation for the reaction that will occur in the experiment is: Sodium thiosulphate + hydrochloric acid →, sulphur + sulphur dioxide +. sodium chloride + water ? where the sulphur is an insoluble precipitate.
1. The labels have fallen off of three bottles thought to contain hydrochloric acid, or sodium chloride solution, or sodium hydroxide solution. Describe a simple experiment which would allow you to determine which bottle contains which solution.
The temperature at which the reaction is carried out Use of a catalyst Reaction equation is mentioned above but rate equation can only be decided by doing experiments. So, the following procedure can be used to carry out the experiment. Plan Equipment 2 Measuring cylinders Beaker Stopwatch Paper with black cross on it Sodium Thiosulphate (different concentrations) Hydrochloric acid (same concentration each time) Water (different concentrations) Pipette. Prediction I predict that the greater the concentration of sodium thiosulphate solution, the faster the chemical reaction will take place.