In class we watched a demonstration where the color of the solution oscillated b

Question

In class we watched a demonstration where the color of the solution oscillated between orange and blue. This is a very complicated reaction with multiple pathways the reaction can take. One pathway can be described as follows: Step 1 . H2O2 + H+ H3O2+ Step 2, H3O2+ + H2O + HO! Step 3. HOI + OH-+ 12 Step4. OH-+ H+ H2O Step 5, 12 + 1--13- How many of the following statements are correct based on the information given? 1. H+ is a catalyst in this reaction 2. HOI is an intermediate in this reaction 3. This reaction is second order with respect to H+ 4. Water is a product of this reaction 5. I2 is a reactant in this reaction 0 2 5 Submit Answer Incorrect. Tries 1/2 Previous Tries

Explanation / Answer

Based on the given data following points are correct:

1) H+ is catalyst because the rewaction will not proceed otherwise.

2) HOI is intermediate as given in pathway. HOI is highly unstable intermediate formed during he reaction.

Reaction is not second order wrt to H+ because even the excess of H+ will give same product

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