Problem: The oxidation of iron (II) ions by iodine in aqueous solution occurs as shown below2 Fe2+ (aq) + l2 (aq) → 2 Fe3+ (aq) + 2 l - (aq)and the experimental rate law is found to be:Rate = k [Fe2+][I2]The proposed mechanism shown below is a valid choice for this reaction:Fe2+ (aq) + I2 (aq) → Fe3+ (aq) + I2 - (aq)Fe2+ (aq) + I2 - (aq) → Fe3+ (aq) + 2 I - (aq)Which of the following statements is true about the proposed reaction mechanism?a. I2- is the catalyst in this mechanism.b. Fe3+ is the intermediate in this mechanismc. The second step  is the rate determing step.d. The rate determining step is bimoleculare. The reaction is first order overall.  

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The oxidation of iron (II) ions by iodine in aqueous solution occurs as shown below

2 Fe2+ (aq) + l2 (aq) → 2 Fe3+ (aq) + 2 l - (aq)

and the experimental rate law is found to be:

Rate = k [Fe2+][I2]

The proposed mechanism shown below is a valid choice for this reaction:

Fe2+ (aq) + I2 (aq) → Fe3+ (aq) + I2 - (aq)

Fe2+ (aq) + I- (aq) → Fe3+ (aq) + 2 I - (aq)

Which of the following statements is true about the proposed reaction mechanism?

a. I2- is the catalyst in this mechanism.

b. Fe3+ is the intermediate in this mechanism

c. The second step  is the rate determing step.

d. The rate determining step is bimolecular

e. The reaction is first order overall.

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