Determine the total pressure of a gas mixture that contains O2, N2 and He, if the partial pressure of the gases are : P (O2) = 200 mm Hg, P (N2) = 350 mm Hg, P (He2) = 428 mm Hg

P (total) = 978 mmHg

Explanation:

Given dа ta:

Total pressure of gas = ?

Partial pressure of O₂ gas = 200 mmHg

Partial pressure of N₂ gas = 350 mmHg

Partial pressure of He gas = 428 mmHg

Solution:

According to Dalton law of partial pressure,

The total pressure inside container is equal to the sum of partial pressures of individual gases present in container.

Mathematical expression:

P (total) = P₁ + P₂ + P₃ + ... + Pₙ

P (total) = P (O₂) + P (N₂) + P (He)

P (total) = 200 mmHg + 350 mmHg + 428 mmHg

P (total) = 978 mmHg