Question

what type of zinc is used in the preparation of hydrogen gas? ​

Answer 1

Answer:

granulated zinc

Explanation:

granulated zinc

Solution : Reaction of acid with pure zinc is vigorous at the beginning and then stop after sometimes as acid does not come in contact with zinc. To get more amount of H2, granulated zinc is taken as it possess more surface area.

Answer 2

❄️*Answer:

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Pure zinc is not used in laboratory preparation of hydrogen because it is non-porous in nature. As a result reaction would occur very slowly. Hence impurities like copper is added to the zinc which increases the speed of the reaction.

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