I poured the Hydrochloric acid into a flask, after I added the Sodium Thiosulphate Rate of Reaction Coursework Essay — Words Bartleby Investigating the rate of reaction between sodium thiosulphate and hydrochloric acid I am going to measure the rate of More about Rate of Reaction Coursework Essay.
This increases the concentration and thus the rate of reaction.
For example when there was 12ml of STS the average time was seconds. It is measured by dividing 1 by the time taken for the reaction to take place. This fits in with my hypothesis and my data. Rates of reaction deals with the 1.
This energy gives the reactant particles enough energy to collide with enough force to break apart the bonds so that new products can be made from atoms.
Reactions that occur slowly have a low rate of reaction. Therefore allowing me to create an accurate test and allowing me to obtain precise results. Background Research Chemical reactions are to do with changing the materials that form the base of your experiment. I then drew up graphs for my results Data Concentration Test Test 2 Test 3 M 1 s s s 1 2 3 4 5 Table 1: Tripod Method Firstly I will draw a small dark cross on a piece of paper and place it on a bench mat.
In my experiment I applied H20 so that I could see the rate of reaction through a more dilute solution. The independent variables will be the initial volume and concentration of sodium thiosulphate, and the initial volume and concentration of hydrochloric acid. On my graph the results show very small error bars which suggests that my results again were very accurate.
To make sure that my test went accurately and precisely I made sure that my timing was accurately done not pressing the timer too early or late. I did not have any problem whilst carrying out my investigation apart and do not believe I could have done it any better without specialist equipment with plenty of time.
Where as when the STS was at 40ml the average time was 32 seconds which shows a very big relationship between the amount of STS and the time taken.
As the temperature increases, the time taken for the sodium thiosulphate solution to become cloudy decreases. Fair Test — In order for my findings to be valid the experiment must be a fair one. This shows that as you increase the independent variable the concentrationthe other variable the time taken for the experimentwent down.
On my ROR graph, there is a positive correlation. Evaluation In conclusion I think my experiment was very successful. The minimum energy that a particle must have to overcome the barrier is called the activation energy, or EAI.
Below are diagrams to illustrate and explain my method Fair Test To ensure that this experiment is fair I will control the variables, i. This problem would have been avoided if I used more accurate equipment.
A small increase in temperature greatly increases the number of particles with energy greater than the activation energy. It is the final change that results increase in rate, even with a relatively small increase in temperature. In addition to this, more particles have activation energy.
I have chosen to investigate the effect temperature and concentration have on a reaction. Furthermore I will measure out the volumes of both the sodium thiosulphate and hydrochloric acid to the greatest degree of accuracy I can manage.
The activation energy for a given reaction can be marked on the distribution curve. The experiment is repeated using all the temperatures.
Therefore the data I obtained looks very reliable. I can also improve my experiment by using a turbidity sensor which judges how cloudy things are.
This is because when there are more molecules in the solution, there are more molecules to collide so this will speed up the reaction, and therefore it is more likely they will collide with each other. In my scatter graph with line of best fit, most of the points are close to the line.
Which consisted of many types or variables such as:. Rate of reaction between sodium thiosulphate COURSWORK thesanfranista.com Uploaded by Anonymous pgjIAZo. Related Interests.
Rate of reaction between sodium thiosulphate A2 level chemistry OCR B revision guide5/5(2). +Chemistry Coursework-How the concentration effects the rate of reaction between sodium thiosulphate and hydrochloric acid By Jess McFarlane 11WM Introduction Sodium thiosulphate and hydrochloric acid are two colourless solutions that gradually react together to form a cloudy yellow precipitate of sulphur when they are mixed.
GCSE Chemistry - Sodium Thiosulphate Coursework We must produce a piece of coursework investigating the rates of reaction, and the effect different changes have on them. The rate of reaction is the rate of loss of a reactant or the rate of formation of a product during a chemical reaction.
GCSE Chemistry Coursework: Investigating the rate of a reaction Your task is to plan, and carry out, an experiment to discover how to change the rate the reaction between sodium thiosulphate solution and dilute hydrochloric acid.
The rate of reaction is the rate of loss of a reactant or the rate of formation off product during a chemical reaction. It is measured by dividing 1 by the time Continue reading "GCSE Chemistry – Sodium Thiosulphate Coursework Essay".
the rate of reaction between Hydrochloric Acid and Sodium Thiosulphate Chemistry Coursework How Concentration Affects a Reaction Aim: The aim of this experiment is to find out how concentration affects the rate of reaction between Hydrochloric Acid and Sodium Thiosulphate.Chemistry rate reaction coursework sodium thiosulphate