A student uses a eudiometer tube to collect oxygen gas over water where the temperature is 22 ºC. What is the pressure of the oxygen gas (mm Hg) if the air pressure in the lab is 735 mm Hg?

1 answer

Ptotal = pO2 + pH2O
Ptotal = 735
PH2O==look up the vapor pressure of H2O at 22 C. Calculate pO2.