rates of reaction

5 Graph for results for rate of reaction against temperature

6 Graph of results for rate of reaction against time

8 Graph and table of typical results

This investigation is about Rates of Reaction and what affects them. In this case I am going to look at hydrochloric acid and sodium thiosulphate, which is a precipitation reaction. I will be investigating whether a change in temperature affects the rate of reaction.

Sodium thiosulphate and hydrochloric acid react together to produce sodium chloride, sulphur dioxide, water and sulphur. This is also shown in the word and symbol equations below:

Sodium thiosulphate + Hydrochloric acid ®Sodium chloride + sulphur dioxide + water + sulphur

Na2S2O3(aq) + 2HCl(aq) -* 2NaCl(aq) + S(s) + SO2(g) + H2O(l)

Both of these solutions are colourless. They react to produce a solid (sulphur, which is the yellow precipitate), and as it cannot dissolve in water, the soluti

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Some common words found in the essay are:
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Approximate Word count = 1795
Approximate Pages = 7 (250 words per page double spaced)