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Reaction of Metals with Acid

The most dang...

Question

The most dangerous method of preparing hydrogen would be by the action of HCl on:

A

Zn

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B

K

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C

Fe

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D

Al

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Solution

The correct option is B K
Potassium is highly reactive metal. It violently reacts with HCl with rapid evolution of hydrogen which catches fire.

$2 K + 2 H C l \to 2 K C l + H_{2}$ (violent reaction)

Option B is correct.

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Reaction of Metals with Acid

Standard VIII Chemistry

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