A mixture of H2 and water vapor is present in a closed vessel at 20°C. The total pressure of the system is 755.0 mmHg.
Partial pressure of water vapor at 20°C equals 17.5 mmHg.
What is the partial pressure of H2?
737.5 mmHz
Huh ? subtract
To find the partial pressure of H2, we need to subtract the partial pressure of water vapor from the total pressure of the system.
Partial pressure of H2 = Total pressure - Partial pressure of water vapor
Partial pressure of H2 = 755.0 mmHg - 17.5 mmHg
Partial pressure of H2 = 737.5 mmHg
Therefore, the partial pressure of H2 is 737.5 mmHg.