The catalyst manganese(IV) oxide, MnO2(s), increases the rate of the decomposition reaction of hydrogen peroxide, H2O2(aq). Which statements about MnO2 are correct?
- I. The rate is independent of the particle size of MnO2.
II. MnO2 provides an alternative reaction pathway for the decomposition with a lower activation energy.
III. All the MnO2 is present after the decomposition of the hydrogen peroxide is complete.
a. I and II only
b. I and III only
c. II and III only
d. I, II and III