During the laboratory preparation of hydrogen gas by the action of dilute acids on zinc, pure zinc is not typically used. Which of the following statements provides the most accurate chemical justific

Question

During the laboratory preparation of hydrogen gas by the action of dilute acids on zinc, pure zinc is not typically used. Which of the following statements provides the most accurate chemical justification for this?

Prashant Kotian · Accepted Answer

Correct answer: C. Pure zinc is not used because it is non-porous and the reaction is extremely slow. Impure granulated zinc is used instead because it is porous, providing a larger surface area, and the impurities set up local electrochemical couples that accelerate the reaction.

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