Question

A sealed glass container contains water and carbon dioxide gas. If there is 0.88 atm CO2 gas and the total pressure inside the container is 1.75 atm what is the partial pressure of water vapor in torr in the glass container? remember sig figs and units

Answer 1

Assuming this water in the beginning of the question is also vapor, Dalton's law of partial pressure tells us that the sum of all pressures in a sealed container is equal to the total pressure inside the container, therefore:

Ptotal = P(CO2) + P(H2O)

1.75 = 0.88 + P(H2O)

P(H2O) = 0.87 atm

1 atm is equal to 760 torr, therefore 0.87 atm = 661.2 torr