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The rate of the hydrogen in the reaction Zn(s) + 2HCI (aq) → ZnCI 2(g)...

Chemistry
WAEC 1989

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
  • 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
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Correct Answer: Option A
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