On a clear day at sea level, with a temperature of 25 °C, the partial pressure of N₂in air is 0.78 atm and the concentration of nitrogen in water is 5.3 × 10^-⁴M. When the partial pressure of N₂is
Atm, the concentration in water is 1.1 × 10^-³M.

Question

Quizplus · Accepted Answer

According to Henry's law, the concentration of a gas in a liquid is directly proportional to the partial pressure of the gas above the liquid. Therefore, we can set up a proportion:

concentration at 1.6 atm / concentration at 0.78 atm = partial pressure at 1.6 atm / partial pressure at 0.78 atm

Solving for the concentration at 1.6 atm, we get:

concentration at 1.6 atm = concentration at 0.78 atm * (partial pressure at 1.6 atm / partial pressure at 0.78 atm)

Plugging in the given values, we get:

concentration at 1.6 atm = (1.1 × 10^-13 M) * (1.6 atm / 0.78 atm) = 2.3 × 10^-13 M

Therefore, the concentration of nitrogen in water when the partial pressure is 1.6 atm is 2.3 × 10^-13 M, which corresponds to choice A).

On a Clear Day at Sea Level, with a Temperature