A sample of hydrogen gas is collected by water displacement at 20.0'C when the atmospheric pressure is 99.8kPa. What is the pressure of the dry hydrogen, if the partial pressure of water vapour is 2.33kPa at that temperature?

Answer 1

Ptotal = pH2 + pH2O
Ptotal = 99.8 kpa
pH2O = 2.33 kPa.
PH2 = ?

Answer 2

ok thanks :D