I tied my hair back, tucked in my tie and pushed all stools and bags under the desk where there is no risk of anyone tripping. Hypothesis My prediction is that the reaction between sodium thiosulphate and acid will be fastest when the acid is at its highest concentration. My data was quite accurate because all of my data follows a particular pattern and the points are all close together. I had to make sure that my classmates were safe as well as myself. Hydrochloric acid is colourless, poisonous and highly acidic. This could have happened because of calculation errors, human errors, recording errors or a fault with the equipment that we used.
I could test this by asking one of my peers to follow the instructions and then asking for their feedback. This shows that there is no real difference between the results. The rate of reaction is the rate of loss of a reactant or the coursework thiosulphate formation of a product during a chemical reaction Free Essays words 6. Papers] Free Thiosulphate words 2. Papers] Free Essays words 1.
The size of the error bars is quite small so I think I can cpursework that my data is quite accurate except for the 2M result which is quite a long error bar. There are 2 outliers Improvements and further investigations: My Error bar graph shows a negative correlation.
The rate of reaction is the rate of loss of a reactant or the rate of formation of a product during a cover letter for customer service advisor position reaction.
Evaluation My standard deviation sheet is attached at the back of this document marked with an asterisk.
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Free Essays words 3. I would do different trials on sulphuric acid and nitric acid. Evaluation – My gcse are reliable because I made it a fair test. Rates of reaction vary depending on which chemicals are being used bydrochloric the activation energy required. It is measured by dividing 1 by the time taken for the reaction to take place.
The bars for 3M, 4m and 5M do not overlap. Also, it has a narrow top and so it is safer. In my scatter graph tiosulphate line of best fit, most of the points are close to the line.
I will discuss these further in my evaluation. The reaction that occurs produces sulphur dioxide, water and sodium chloride. Remember me on this computer. I could test this by asking one of my peers to follow the instructions and then asking for their feedback. Papers] Free Essays words 5.
I predict that as the concentration of the Sodium Thiosulphate coursewodk, the rate of the reaction will double. I drew 6 different graphs for this investigation. Papers] Free Coyrsework words 1. These reactions only happen if the reacting molecules collide properly. The page you are looking for might have been removed, had its name changed, or is temporarily unavailable.
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.
(DOC) GCSE CHEMISTRY RATES OF REACTION COURSEWORK | Anjelina Qureshi –
In this investigation I will be varying the concentration of Sodium Thiosulphate thesis writing practice worksheets and not the Hydrochloric acid concentration. This is good because I will instantly be able to see any reactio in the solution. My data was precise because most of the points on my graphs are close to the line and are all close by each other.
These are circled on my graphs. I will investigate how the rate of this reaction is reactkon when the experiment is carried out at different temperatures.
Papers] Research Papers words 3. The enthalpy change is the amount of heat absorbed or released when a chemical reaction occurs at a constant pressure. I have highlighted the 2M results on my tables because it seems as though there is a problem with that set.
In this investigation I will use the following word equation: There is five factors which affect the rate of a reaction, according to the collision theory of reacting particles: There are a few mild outliers.
I have calculated the gradient of my line to support my hypothesis and found that: