On a clear day at sea level, with a temperature of 25 °c, the partial pressure of n2 in air is 0.78 atm and the concentration of nitrogen in water is 5.3⋅10−4 m. when the partial pressure of n2 is atm, the concentration in water is 2.0⋅10−3 m.

Answer : The partial pressure of nitrogen gas is, 2.94 atm

Explanation:

According top the Henry's Law, the concentration of a gas in a liquid is directly proportional to the partial pressure of the gas.

is Henry's constant.

or,

where,

= initial concentration of gas =

= final concentration of gas =

= initial partial pressure of gas = 0.78 atm

= final partial pressure of gas = ?

Now put all the given values in the above formula, we get the final partial pressure of the gas.

Therefore, the partial pressure of nitrogen gas is, 2.94 atm

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