Question

The vapour density of a gas is 22. Find the volume occupied by 220 g of this gas at 27°C and 570mm of Hg pressure. Take R = 0.084 L atm/k/mol.​

Answer 1

Answer:

Molar mass=2×Vapour density

Given, Vapour Density=11.2

Molar mass=11.2×2=22.4g/mol

No.of moles of gas=

22.4

10

≅0.45moles

At STP, 1 mole occupies 22.4L volume.

0.45 moles occupy 22.4×0.45=10 L volume.

∴ Volume occupied is 10 litres.