Question

The density of a gas at 760 mm pressure and $0^{\circ }$ temperature is 30g/c.c. If the temperature is kept constant,what will be the density of that gas at 570 mm pressure?

• A. 52.2 g/cc
• B. 65 g/cc
• C. 50 g/cc
• D. 22.5 g/cc

Answer 1

The correct option is D 22.5 g/cc

According to relationship between pressure and density of a gas,
$\frac{P_1}{D_1}=\frac{P_2}{D_2}or\frac{760}{30}=\frac{570}{D_2}$
$\Rightarrow D_2=\frac{570\times 30}{760}=22.5g/cc$