Question

The volume of a gas at pressure $21\times {10}^{4}N/m^2$ and temperature ${27}^{\circ }$C is 83 litres. If R = 8.3 J/mol/K, then the quantity of gas in gm-mole will be

• A. 15
• B. 42
• C. 7
• D. 14

Answer 1

The correct option is C 7

$PV=\mu RT\Rightarrow \mu =\frac{PV}{RT}=\frac{21\times {10}^4\times 83\times {10}^{-3}}{8.3\times 300}=7$