The rate of the hydrogen in the reaction Zn(s) + 2HCI (aq) → ZnCI2(aq) + H2(g) can be increased by?

A. using Zinc powder instead of Zinc granules
B. using dilute instead of concentrated hydrochloric acid
C. cooling the container in which the mixture is placed
D. using an alloy of zinc instead of pure zinc
E. using hydrogen chloride gas instead of hydrochloric acid solution

Correct Answer:

Option A – using Zinc powder instead of Zinc granules