MCQ : The volume of 4.4 g of CO2 at STP is

Question

The volume of 4.4 g of CO₂ at STP is –

1. 22.4 L
2. 2.24 L
3. 224 L
4. 44.8 L

Answer

(b) 2.24 L

Explanation:

Molar mass of CO₂ = 12 + 16 × 2 = 44 g

Number of moles (n) = 4.4/44 = 0.1

Temperature (T) = 273 K

Pressure (P) = 1 atm

Gas constant (R) = 0.0821 L.atm/mol.K

PV = nRT

(1 atm) × V = (0.1 moles) × (0.0821 L.atm/mol.K) × (273 K)

V = 0.1  × 0.0821 × 273 /1 = 2.24 L