The question is incomplete, here is the complete question:
Calculate the solubility of hydrogen in water at an atmospheric pressure of 0.380 atm (a typical value at high altitude).
Atmospheric Gas Mole Fraction kH mol/(L*atm)


Ar




Answer: The solubility of hydrogen gas in water at given atmospheric pressure is

Step-by-step explanation:
To calculate the partial pressure of hydrogen gas, we use the equation given by Raoult's law, which is:

where,
= partial pressure of hydrogen gas = ?
= total pressure = 0.380 atm
= mole fraction of hydrogen gas =

Putting values in above equation, we get:

To calculate the molar solubility, we use the equation given by Henry's law, which is:

where,
= Henry's constant =

= partial pressure of hydrogen gas =

Putting values in above equation, we get:

Hence, the solubility of hydrogen gas in water at given atmospheric pressure is
