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An Experiment to Investigate the Effect of Concentration on the Rate of Reaction

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  • Essay length: 2749 words
  • Submitted: 24/01/2008
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GCSE Patterns of Behaviour

The first 200 words of this essay...

An Experiment to Investigate the Effect of Concentration on the Rate of Reaction

Shehzad Ali Charania

An Experiment to Investigate the Effect of Concentration on the Rate of Reaction

Planning

1. Aim

This experiment's aim is to discover the effect the concentration of a reactant has on the rate of reaction. We will be using sodium thiosulphate and hydrochloric acid. This is because the speed the sulphur (a product) is produced is quite easy to measure and covers the aim of the experiment sufficiently. To try to investigate the aim, w will change the concentration of the sodium thiosulphate and repeat this twice before taking an average and recording our results.

The equation for this experiment is:

Na2S2O3 + 2HCl --> 2NaCl +SO2 + H2O + S

The word equation for this experiment is:

sodium thiosulphate + dilute hydrochloric acid --> sodium chloride + sodium dioxide + water + sulphur

2. Preliminary Experiment

The preliminary experiment involved using the chosen substances to try to investigate the rate of reaction. The reagents we chose are sodium thiosulphate and dilute hydrochloric acid. These substances react to produce sulphur as one

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