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Atoms and molecules are so small in size...

Atoms and molecules are so small in size that it is neither possible to count them individually nor possible to determine their mass. These are counted collectively in terms of Avogadro's number. The mass of Avogadro's number of atoms and molecules of a substance is known as gram atomic mass and gram molecular mass respectively. The volume occupied by Avogadro's number of molecules of a gas or vapour, is known as molar volume.
The vapour density of a gas is 11.2. The volume occupied by 11.2 g of a gas at N.T.P. will be

A

22.4 L

B

11.2 L

C

1 L

D

44.8 L

Text Solution

Verified by Experts

The correct Answer is:
B
V.D. of gas = 11.2
Molar mass `=2xx11.2=22.4`
Gram molecular mass = 22.4g
22.4 g of gas at N.T.P occupy = 22.4 L
11.2 g of gas at N.T.P occupy = 11.2 L
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