Transcription of Investigating the rate of a reaction - Creative Chemistry
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Copyright 2003 Nigel Saunders rates Compilation Investigating the rate of a reaction1. Preliminary workTheory: factors affecting the rate of reaction ( temperature and concentration) use of particle collision theory to explain these factors rate measured by: rate of disappearance of reactants or appearance of products graphical methods of determining rate of reaction Practical: reaction between dilute hydrochloric acid and sodium thiosulphate solution (disappearing cross method). Points to note about this assessment: )although the equation looks complex, only the appearance of sulphur is simple to do; )the sulphur comes from the sodium thiosulphate solution, so only the acid should be diluted if concentration is being studied.
) explain simply what the results show 2 ) show the results in simple diagrams, charts or graphs ) find trends or patterns in the results 4) draw and use diagrams, charts, graphs (with a line of best fit), or calculate answers from the results (working out averages doesn’t count)
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