Calculate the solubility of benzene in water at 25 c in ppm. the required henry's law constant is 5.6 bar/mol/kg and benzene's saturated vapor pressure is 0.13 bar.

The relationship between pressure and solubility of the gas is given by Henry's law as:

where,

is the solubility of the gas.

is proportionality constant i.e. Henry's constant.

is pressure of the gas.

(given)

(given)

Substituting the values,

To convert to :

Molar mass of benzene, =

Now for converting into :

Since,

So, .

Hence, the solubility of benzene in water at in is .