Question

The molecular weight of a gas is 44. The volume occupied by 2.2 g of this gas at $0{^\circ}C$ and 2 atm. pressure will be

• A. 0.56 litre
• B. 1.2 litres
• C. 2.4 litres
• D. 5.6 litres

Answer 1

Answer: (A)

0.56 litre

Answer 2

$PV = mrT = m\left( \frac{R}{M} \right)T$

Ž $V = \left( \frac{m}{M} \right)\frac{RT}{P}$=$\left( \frac{2.2}{44} \right) \times \frac{8.31 \times (273 + 0)}{2 \times (1 \times 10^{5})}$

= $5.67 \times 10^{- 4}m^{3}$ = 0.56 litre.