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Volume of Gases and Number of Moles

24.0 grams of...

Question

$24.0$ grams of metal reacts with an acid and liberated 22.4 litres of hydrogen at STP. The equivalent mass of the metal is:

A

24

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B

12

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C

48

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D

6

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Solution

The correct option is A 12
Equivalent mass of metal $= \frac{Weight of the metal}{Volume of H_{2} liberated at STP} \times 11.2$

Therefore, Equivalent Mass $=$ $\frac{24 \times 11.2}{22.4}$ $=$ $12$ .

Hence, option B is correct.

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