Question

d) Hydrogen Vapour density of a gas with respect to oxygen is 1.5. The molar mass of a gas 3g/mol b) 6 g/mol c) 32 g/mol d) 48 g/mol g​

Answer 1

Explanation:

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Vapour density of a gas is 11.2. The volume occupied by 11.2 g of this gas at STP is:

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Solution

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Correct option is

B

11.2l

Vapour density of a gas is 11.2.

Molecular weight is twice its vapour density.

It is 2×11.2=22.4 g/mol.

11.2 g of gas =

22.4g/mol

11.2g

=0.5mol.

At STP 1 mole of gas =22.4 L.

At STP 0.5 mole of gas =0.5×22.4=11.2 L.