Rates of Reaction gcse controlled assessment chemistry Rates of Reaction BUT you can use and extend these 'brain stormed' ideas to most rates of reaction coursework assignments
Tripod Method Firstly I will draw a small dark cross on a piece of paper and place it on a bench mat.
I will then put 40cm3 of sodium thiosulphate into a conical flask and place it on a tripod and gauze. I will heat the solution for a few minutes until the desired heat is reached, i.
Next I will place the conical flask on top of the cross, pour 5cm3 of hydrochloric into the hot sodium thiosulphate solution and time how long it takes for the cross to disappear. On each experiment I will take three readings and work out an average from the data I have obtained.
Below are diagrams to illustrate and explain my method Fair Test To ensure that this experiment is fair I will control the variables, i. I will keep everything constant apart from the variable I am changing-temperature. Therefore, I will make sure that I only change the temperature of the reaction mixture and keep the volume and concentration of the sodium thiosulphate, the volume and concentration of hydrochloric acid and the pressure of all the mixtures the same.
Furthermore I will measure out the volumes of both the sodium thiosulphate and hydrochloric acid to the greatest degree of accuracy I can manage. I will also try to make my timing and the heating of the sodium thiosulphate solution as accurate as possible.
Variables There are different variables which can be changed.
I am, however due to my line of enquiry, going to change the temperature of the solution. The independent variables will be the initial volume and concentration of sodium thiosulphate, and the initial volume and concentration of hydrochloric acid. Below is a table to show the effect of changing different variables.
Safety I will make sure I handle the sodium thiosulphate solution and hydrochloric acid with care. I will also be careful when heating up the solutions and will at all times wear safety goggles and also remain standing throughout the experiment.
Furthermore I will be careful not to spill anything and will take extra care when doing the experiment. Results Below is a table showing my results from the main investigation I can see from observing the table that the first part of my prediction was correct.
As the temperature increases the rate of reaction increases too, due to more collisions and more successful collisions, caused by the increase in temperature. I am going to draw a graph analyse by results properly. It also has a line of best fit to show the consistency and accuracy of the results.
There are no anomalous results which shows that the experiment was very accurate. Furthermore, the graph is a perfect curve It is obvious that there is a general trend in the results.Enthalpy 2|Page Anjelina Qureshi Mrs Gravell Rates of Reaction Coursework Chemistry Year 11 Enthalpy, in chemistry, is the heat content in a chemical reaction.
The enthalpy change is the amount of heat absorbed or released when a chemical reaction occurs at a constant pressure. Rates of Reaction Coursework.
Introduction. In this piece of science coursework I will be experimenting how the rate of reaction between Sodium thiosulphate and hydrochloric acid is. - Rates of Reaction Coursework. Introduction. In this piece of science coursework I will be experimenting how the rate of reaction between Sodium thiosulphate and hydrochloric acid is affected by the concentration of Sodium thiosulphate.
Jul 02, · A grade GCSE chemistry coursework, Rates of reaction, Decomposition of sodium thiosulphate, introduction, method, safety, results, discussion.
Sodium thiosulphate decomposition for GCSE, grade a vetconnexx.coms: 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 (Single Science) Chemistry is the study of the composition, behaviour and properties of matter, and of the elements of the Earth and its atmosphere.
Chemistry is the study of.