Question

The density of a gas is 2 $\frac{g}{L}$ at 1 atm and ${27}^{0}C$. The density of the same gas at 2 atm and ${127}^{0}C$ is:

• A. 3 g/L
• B. 1.33 g/L
• C. 2 g/L
• D. 1 g/L

Answer 1

The correct option is A

3 g/L

$d=\frac{PM}{RT}$

$\frac{d_1}{d_2}=\frac{P_1}{P_2}\times \frac{T_2}{T_1}$

$\frac{2}{d_2}=\frac{1}{2}\times \frac{400}{300}$

$d_2=3\frac{gm}{lit}$