Question

During the course of the reaction:

• A. catalyst undergoes changes in oxidation state
• B. catalyst increases the rate constant
• C. catalyst is regenerated in its orginal form when the reactants form the products
• D. all are correct

Answer 1

The correct option is D all are correct

Vanadium goes from$V^{5+}\rightleftarrows V^{4+}$ so there is change in oxidation state

using $K=A{e}^{\frac{-E_a}{RT}}$ a catalyst lowers $E_a$ thus increasing K

A catalyst like$V^{5+}$ here is regenerated by$\frac{1}{2}{O}_2$ as shown in the questions

thus all are correct