Correct the following statements:

(e) $C o n c . H_{2} S O_{4}$ reacts with zinc to liberate hydrogen.

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Solution

$D i l . H_{2} S O_{4}$ reacts with zinc to liberate hydrogen gas.

That is,

$Z n + H_{2} S O_{4} \to Z n S O_{4} + H_{2}$

If $c o n c . H_{2} S O_{4}$ is used, then liberation of $S O_{2}$ takes place instead of $H_{2}$ .

That is,

$Z n + 2 H_{2} S O_{4} (c o n c .) \to Z n S O_{4} + S O_{2} + 2 H_{2} O$

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Similar questions

Correct the following statements :

(a) Hydrogen is used as a fuel for rocket propulsion.

(b) All metals react with acids to give hydrogen.

(d) Very dilute nitric acid reacts with zinc to produce hydrogen.

(e) $C o n c . H_{2} S O_{4}$ reacts with zinc to liberate hydrogen.

_________ metal reacts with water to liberate hydrogen.

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