Chemistry coursework sodium thiosulphate conclusion

I can also improve my experiment by using a turbidity sensor which judges how cloudy things are. This shows that there is no real difference between the results. My results were outstanding seen as though I had no outliers or the error bars on my graph are very small.

This is very important because loose hair can not only get dipped into chemicals but can also obscure vision. For every one M increase, the rate for reaction increases by 2. Fair Test — In order for my findings to be valid the experiment must be a fair one.

One of my problems I encountered during my experiment was the time taken to press the timer which in my opinion affected my results. The points in the top right are quite far down so this shows a negative correlation. To do this I would make sure that: If the results were consistent and accurate I could use them to back up my original theory.

Taken as a whole I can see that my experiment went very well. I will make sure that the measuring cylinders for the HCI and theosophical will not be mixed up. My experiment was placed not in the way of people so that my experiment is not any risk to me or them. Also many other variables affect the collision rate to increase such as Catalysts and temperature etc.

The range of my results were also suitable to make good observations and conclusions By comparing the repeated times on each of the experiments I can see that they were similar and each one was within two seconds of each repeat.

The stopwatch will now be started. I used this to gauge when to stop the reaction — when the black x was obscured by the white sulphur precipitate, the timer was stopped. 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.

The bars of 1M and 2M overlap and this shows that there is no real difference. This fits in with my hypothesis and my data. Not only is the results reliable but they are easy to understand as for the key which describes the part on the graph such as line of best fit, error bars etc.

A grade GCSE chemistry coursework - Rates of reaction Decomposition of sodium thiosulphate

By using this turbidity sensor would give me more precise and reliable results. Once I decided the concentration I then carried out my experiment. Therefore this applies to the accuracy of the test. The time graph for the temperature experiment has a much steeper curve than the one for the concentration experiment, meaning that the decrease in time taken for the reaction was far more rapid.

Maybe using a better timer to record my results would have granted me more accurate results. The experiment is repeated using all the temperatures. The experiment is repeated with all the concentrations. My conclusion is valid because it includes evidence that my data is accurate and I have summed up my experiment in it.

For a reaction to occur particles have to collide with each other. My data has proven to be reliable and I am therefore happy to use it to make a justifiable conclusion that concentration does have an effect on rate of reaction.

Only a small percent result in a reaction. One of my problems I encountered during my experiment was the time taken to press the timer which in my opinion affected my results.

What I predicted in my preliminary test was, as the sodium-thiosulphate concentration increased, the time taken for the solution to turn cloudy took longer.

The bars for 3M, 4m and 5M do not overlap.

Chemistry Gcse Coursework Rates of Reaction

- Sodium Thiosulphate and Hydrochloric Acid Reaction Investigation Aim To see the effects of concentration on the rate of a reaction between sodium thiosulphate and hydrochloric acid. Background information The collision theory briefly: For a reaction to occur particles have to collide with each other.

The effect of temperature on rates of reaction Aim: The aim of this experiment is to find out if the reaction rate of sodium thiosulphate solution and hydrochloric acid will be affected by a temperature change. 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.

GCSE Chemistry – Sodium Thiosulphate Coursework Essay. Under: Essays Sodium Theosophical 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 off product during a chemical reaction.

Rates of Reaction Coursework

Sodium Thiosulphate CourseworkThe Coursework on Concentration Of Acid Reaction Magnesium Rate. 5 cm of HCl (at concentration 1 mol. /dm3) and 15 cm of sodium thiosulphate (at varying concentrations 10 to 35 g/dm3) are poured out into two measuring cylinders.

How concentration affects the rate of reaction between Hydrochloric Acid and Sodium Thiosulphate Words | 6 Pages. 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 coursework sodium thiosulphate conclusion
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Chemistry Gcse Coursework Rates of Reaction - New York Essays