Question

Why is granulated zinc preferred over other metals for preparation of hydrogen?

Answer 1

granulated zinc is preferred to the other metals in thepreparation of hydrogen using dilute acids because asgranulated zinc contains copper as impurity which acts as a catalyst in this reaction. thereby increasing the rate of reaction.

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Answer 2

Answer:

Granulated zinc is ideal for the preparation of hydrogen gas in chemical laboratories because it usually contains a small amount of copper, which has the ability to act as a catalyst to the associated chemical reaction and, therefore, increase the rate of the chemical reaction without actually participating in it.