Question

Question 5.17 Calculate the volume occupied by 8.8 g of CO2 at 31.1°C and 1 bar pressure.

R = 0.083 bar L K–1 mol–1.

Class XI States of Matter Page 153

Answer 1

we know, gaseous formula,
PV = nRT

here given,
weight of CO2 = 8.8 g
so, mole (n) = given weight of CO2/molar mass of CO2
= 8.8/44 = 0.2 mol
T = 31.1°C = 31.1+ 273 = 304.1 K
P = 1 bar
R = 0.083 bar L/K/mol
V = ?

now,
V = nRT/P
= 0.2 × 0.083 × 304.1/1
= 5.048 L