Question

Pressure of a mixture of 4 g of O₂ and 2 g of H₂ confined in a bulb of 1 litre at O°C is

(a) 25.215 atm

(b) 31.205 atm

(c) 45.215 atm

(d) 15.210 atm

Answer 1

Correct option is (a) 25.215 atm

According to the Dalton’s law of partial pressures

p_T = p₁ + p₂

p₁ = Partial pressure of O₂

p₂ = Partial Pressure of H₂

p_T = Pressure of the mixture or total pressure

p_T = (n₁ + n₂) RT/V