Question

A total of 0.829 L of hydrogen gas is collected over water at 33.0°C. The total pressure is 794 torr.

If the vapor pressure of water at 33.0°C is 13.2 torr, what is the partial pressure of hydrogen?

Answer 1

P(H₂) = 807.2 torr

Step-by-step explanation:

According to the Dalton law, the pressure of mixture of a gas is sum of the partial pressure of its mixing component gases.

P(total) = P1 + P2 + P3 +....

In given problem,

Total pressure is = 794 torr

Partial pressure of water = 13.2 torr

Partial pressure of hydrogen = ?

Solution:

P(total) = P(H₂O) + P(H₂)

P(H₂) = P(total) - P(H₂O)

P(H₂) = 794 torr - 13.2 torr

P(H₂) = 807.2 torr