Question

For oxygen gas in air and dissolved in water, at equilibrium __________.

a) the concentration of oxygen in the air is less than the concentration of oxygen in the water
b) the partial pressure of oxygen in air is equal to the partial pressure of oxygen in water
c) the concentration of oxygen in the air is equal to the concentration of oxygen in the water
d) the partial pressure of oxygen in the air is greater than the partial pressure of oxygen in the water

Answer 1

According to Henry's law, the solubility of a gas in a liquid is directly proportional to the partial pressure of the gas above the liquid. At equilibrium, the partial pressure of oxygen in air is equal to the partial pressure of oxygen in water.

Step-by-step explanation:

According to Henry's law, the solubility of a gas in a liquid is directly proportional to the partial pressure of the gas above the liquid. In other words, as the partial pressure of oxygen in the air increases, the concentration of dissolved oxygen in water also increases. When the system reaches equilibrium, the partial pressure of oxygen in the air is equal to the partial pressure of oxygen in the water. Therefore, the correct answer is b) the partial pressure of oxygen in air is equal to the partial pressure of oxygen in water.