Determine the partial pressure of oxygen collected by water displacement if the water temperature is 20.0

Question

◦
C and the total pressure of
the gases in the collection bottle is 760 torr.
PH2O at 20.0
◦
C is equal to 17.5 torr.

Answer 1

Ptotal = pO2 + pH2O
Ptotal = 760 torr
pH2O = 17.5
pO2 = ?

Answer 2

so you get your 760 torr because that is your total and you subtract your 17.5 torr and you get 742.5 and that is your pO2

Answer 3

20