Question

What is the maximum amount of water vapor air can hold at a given temperature called ?

Answer 1

Hint: In order to solve this question we need to understand the definition of vapor which states that vapor is a state of gas having small drops of liquid in air. It is considered to be steam also and due to small drops of liquid it has pressure known as vapor pressure. Vapor pressure is defined as a measure of the tendency of a material to change into gaseous state; it increases with temperature.

Complete answer:
Vapor pressure can hold a certain amount of liquid but this amount is fixed it cannot be increased beyond a certain limit and hence the maximum amount of water vapor air can hold at a given temperature is known as Saturation point it is also known as $100\% $ relative humidity.

Now what happens if we go beyond saturated vapor is air condense into liquid again. The corresponding temperature at which air cools in order to reach saturation is called dew point temperature. Also here we use the term of relative humidity which states that it is the ratio of the amount of moisture present in air to the amount of moisture air can hold.

Hence, the maximum amount of water vapor air can hold at a given temperature is known as Saturation point.

Note: It should be remembered that when the humidity becomes $100\% $ that point air has saturated vapor so after which if we add liquid it condenses and falls as rainfall . Also vapor pressure increases with temperature so at saturated vapor it has max temperature and pressure and that is the reason we feel hotness increased.