The rate of the hydrogen in the reaction Zn(s) + 2HCI (aq) → ZnCI 2(g) + H 2(aq) + H 2(g) can be increased by
-
using Zinc powder instead of Zinc granules
- using dilute instead of concentrated hydrochloric acid
- cooling the container in which the mixture is placed
- using an alloy of zinc instead of pure zinc
- using hydrogen chloride gas instead of hydrochloric acid solution