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

Correct answer is A

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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