Asample of h2 is collected over water such that the combined hydrogen water vapor sample is held at a pressure of one standard atmosphere. what is the partial pressure of the h2 if that of the water vapor is 2.5 kpa

Answer : The partial pressure of is 98.825 kPa.

Solution : Given,

Total pressure of hydrogen water vapor = 1 atm = 101.325 kPa    (1 atm = 101.325 kPa)

Partial pressure of water vapor = 2.5 kPa

Dalton's law of partial pressure : It is defined as the total pressure exerted is equal to the sum of the partial pressure of individual gases.

Formula used :

= Total pressure

= Partial pressure of individual gases

Now put all the given values in this expression, we get

Therefore, the partial pressure of is 98.825 kPa.