Vertigo3729
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In regards to the iodine clock-reaction, I noticed that several sources use either hydrogen peroxide and sulfuric acid, or peroxydisulphate ions. May I ask what is the difference between using the two and why do we add sulfuric acid to hydrogen peroxide?
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charco
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(Original post by Vertigo3729)
In regards to the iodine clock-reaction, I noticed that several sources use either hydrogen peroxide and sulfuric acid, or peroxydisulphate ions. May I ask what is the difference between using the two and why do we add sulfuric acid to hydrogen peroxide?
No difference. You are just using another oxidising agent. Sulfuric acid is used to keep the pH low and ensure that the oxidation takes place in acidic conditions. Oxidation and reduction processes are pH dependent and often give different products in different pHs.
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Vertigo3729
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Oh okay, that makes sense. Thanks!
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