Question
Air is made up of several gases, including water vapor. What is true about the pressure exerted by water vapor in air? Select all that apply. A. It is called the partial pressure of water vapor. B. It is directly proportional to the mole fraction of water vapor. C. It is larger than the pressure exerted by all gases in air. D. It is part of the total pressure exerted by the air.
Answer
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Alexander
Professional · Tutor for 6 years
Answer
A. It is called the partial pressure of water vapor.B. It is directly proportional to the mole fraction of water vapor.D. It is part of the total pressure exerted by the air.
Explanation
The pressure exerted by water vapor in air is known as its partial pressure and is part of the total pressure of the air. According to Dalton's Law, the partial pressure is proportional to the mole fraction of the gas. However, it is not larger than the pressure exerted by all gases in air.