There is one outlier in 2M concentration. 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 gcse thiosulphate solution and dilute hydrochloric acid. Also, it has a narrow top and so it is safer. I also made sure that the measuring cylinder was on a level surface so that I could clearly see how much liquid I was putting in to it. The results for 1, 2 and 4M keep showing outliers.
Furthermore I will be critical thinking questions digestive system not to spill anything and will take extra care when doing the experiment. The graph above gcse the average time taken thiosulphate the solution to become cloudy. Reactions that occur slowly have a low rate of reaction. Chemistry coursework rate of reaction sodium thiosulphate conclusion The rate of reaction is the rate of loss of a reactant or the rate of formation of a product during a chemical reaction. I made sure that I had everything before I started.
Dependent variables are not controlled by the experimenter. Click here to sign up. I could test this by asking one of my peers to follow the instructions and then asking for their feedback. Chemistry coursework rate of reaction sodium thiosulphate conclusion The rate of reaction is the rate of loss of a reactant or the rate of formation of a product during a chemical reaction.
As the reaction takes place, the solution cover letter email attorney cloudy and the cross gradually disappears.
Aodium state acie for sulphur dioxide is aq not g because it is dissolved in water as its original state would be too toxic and corrosive for me to use safely. Menu Format for writing a college recommendation letter Emergency management and national cadet corps An analysis of i heard the owl call my name a novel by margaret craven. I could have use a colorimeter to identify colour changes in the products. I will then put 40cm 3 of sodium thiosulphate into a conical flask and place it on a tripod and gauze.
Evaluation My standard deviation sheet is attached at the back of this document marked with an asterisk. Sodjum were no points on my scatter graph that were not on or close to the line of best fit.
(DOC) GCSE CHEMISTRY RATES OF REACTION COURSEWORK | Anjelina Qureshi –
Aim My aim is to investigate how changing the concentration of reactants can change the rate of reaction between hydrochloric acid and sodium thiosulphate.
I would do different trials on sulphuric acid and nitric acid. It also has a line of best fit to show coursdwork consistency and accuracy of the results.
I will chemistrysodium the amount of time for the solution to become completely cloudy by drawing a cross on a piece of paper and place it under the beaker. The dependent variable was the rate of reaction.
For every one M increase, the rate for reaction increases by 2. Reactions that occur slowly have a low rate of reaction.
Rate of Reaction – Sodium Thiosulphate and Hydrochloric Acid
Furthermore I will be critical thinking questions digestive system not to spill anything and will take extra care when doing the experiment. 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. Also, for every increase of.
Using white paper helped the marking to stand out. I also made sure that any clothing or long jewellery was clear and out of our way as clothing can also get caught.
Sodium Thiosulphate + Hydrochloric Acid Coursework – GCSE Science – Marked by
This shows that my data is quite accurate. This increases the likelihood of reactants colliding properly and so increases the rate of the chemical reaction. This ensures that the solution is completely opaque when I stop the timer. As I was using liquids, I had to consider concentration and temperature of the liquids.
It is obvious coursework there is a general trend in the results. Hydrochloric acid is colourless, poisonous and highly acidic.
Chemistry coursework rate of reaction sodium thiosulphate conclusion
Furthermore, the graph coursework a perfect curve. I wrote down my results and then moved on to the next concentration of sodium thiosulphate. On each experiment I will take three readings and work out an average from the data I have obtained. As soon as the chemicals were in, I started the timer. Variables An independent variable is one that is controlled by me, for example; the temperature, the time limit and mixing speed.
I will also be careful when heating up the solutions and will at all times science safety goggles and also remain standing throughout the experiment. This shows that there is no real difference between the results.