Rates of reaction - kinetics (A2)
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I am using the iodine clock reaction for my investigation and am looking for suitable catalysts. I know that Cu(II) ions or Fe(II) ions are needed, but I'm not sure which compound to use. I am using potassium iodide, potassium peroxodisulphate, and sodium thiosulphate. I considered copper sulphate but was concerned about the impact the sulphate would have on the reaction. Could you suggest suitable catalysts, or how I should account for the sulphate if the copper sulphate catalyst were to be used?
210208
Corrie writes ......
I would be very surprised if the sulphate ion has any catalytic effect on the redox reactions in this experiment. Don't forget, sulphate ions are one of the products of the reaction anyway. I would go ahead with the catalysts you were intending to use.
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updated: 21 February 2008
