Question

What happens to percent humidity when an unsaturated air-water vapour mixture is cooled at constant pressure without contact with liquid water?

Answer 1

Explanation:

Specific humidity (humidity ratio): Specific humidity is the ratio between the actual mass of water vapour present in moist air to the mass of the dry air. It is normally expressed in kilogram water vapour per kilogram dry air (SI units). The specific humidity or humidity ratio can be expressed as: x = mw/ma where x = specific humidity or humidity ratio (kg water/kgair, 1bwater/1bwater/1bdry_air), mw = mass of water vapour (kg, lb) and ma = mass of dry air (kg, lb).

Answer 2

Answer:

There are some properties which affect the vapor pressure of liquid such as temperature and intermolecular forces. Answer: Vapor pressure is independent of humidity. ... Humidity will affect the vapor pressure only when all other variables are fixed