partial pressures

fatima_a

what is the partial pressure of oxygen gas. if it is collected over water at 25 degrees celcius and an atmospheric pressure of 99.3 KPa. answer in mmHg

okay i know the formula for partial pressures is

P total = P O2 + P H2O

but there is no other info given like the volume or anything so i am lost. please answer by tomorrow. and show all the steps. i have a quiz the day after

Redbelly98

There should be a discussion of how H20 pressure varies with temperature, either in your textbook or class lecture notes. You might try looking up "vapor pressure" or "pressure, vapor" in the index of your textbook.