Question

What is the volume of 0.04 mol of a gas at 0.9 kPa and 20°C?

A. 108 L
B. 14.8 L
C. 87.5 L
D. 7.4 L

Answer 1

A. 108 L is the winner!

Answer 2

The correct answer is option A.

Step-by-step explanation:

Pressure of the gas ,P= 0.9 kPa = 0.008882 atm

1 kPa = 0.0098 atm

Number of moles gases = n = 0.04 mol

Temperature of the gas ,T =20°C = 293 K

Volume of the gas = V

Using An Ideal gas equation:

PV=nRT

`V=(nRT)/(P)=(0.04 mol* 0.0820 atm L/mol K* 293 K)/(0.008882 atm)=108.20 L\approx 108 L`

Hence, the correct answer is option A.