This might have occurred for several different reasons, such as the fact that the temperature control might not have been exactly the same or that my judgement of when the cross may have disappeared might not have been exactly the same for each one.
It is often used as a chemical intermediate and in petroleum production, food processing, pickling, and metal cleaning. This makes sure that my experiment runs smoothly.
Enzyme catalysed reactions e. Hydrochloric acid is colourless, poisonous and highly acidic. If I do a further investigation, I will try to minimise the number of mistakes that I make. I would expect the following graph to emerge from the results: If you have decided, for example, to investigate the effect of acid concentration on the speed of a reaction, then everything else should be kept constant for a fair test, and this should be obvious in your plan for the reasons discussed above!
In this preliminary test I measured the amount of gas released in the reaction every thirty seconds for three minutes. This can help me identify any faults. My Error bar graph shows a negative correlation.
For sources and references you should research 'rates of reaction' for theory, experimental methods etc. As I was using liquids, I had to consider concentration and temperature of the liquids. This causes a quicker reaction.
This is supportive of my conclusion. The room temperature could have affected my reaction and this could be the reason that I have some outliers. This good because it shows that for every increase in concentration is a decrease in rate of reaction. The simplest solution here, is to make sure all the chemicals have been standing in the laboratory prior to the lesson.
My conclusion is justifiable because I have backed it up with points from my data and I have proved all the points that I made. Corks are too porous and will leak. I could have use a colorimeter to identify colour changes in the products.A BRAINSTORM on "Rates of Reaction" for chemistry coursework investigations-projects.
Ideas for coursework assignments or projects involving the rates or speed of chemical reactions and is a companion page to see also the DETAILED GCSE Revision Notes on the Factors Affecting the Rates of Chemicals which also has brief descriptions of experimental methods and equations, particle pictures.
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.
- Investigating Rates of Reactions My aim is to investigate what factors affect the rate of reaction between magnesium and hydrochloric acid. The factor that I will be focusing on is the concentration of Hydrochloric acid. 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 agronumericus.coms: Chemistry Coursework Rates of Reaction Investigation Introduction In this investigation I am going to be investigating the reaction between marble chips and hydrochloric acid, and to see what differences in the rate of this reaction arise when different concentrations of acid are used.
Chemistry Gcse Coursework Rates of Reaction Essay 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.Download