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

CHEMISTRYWAEC 1989

The rate of the hydrogen in the reaction Zn(s) + 2HCI (aq) → ZnCI 2(g) + H2(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

Correct Answer: A. using Zinc powder instead of Zinc granules

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