The relative humidity of air is `80%` at `27^(@)C`. If the aqueous tension at the same temperature is 27 mm of Hg. The partial pressure of water vapour in the air will be (in mm of Hg).

The vapour pressure of water at room temperature is 23.8 mm Hg. The vapour pressure of an aqueous solution of sucrose with mole fraction 0.1 is equal to :

The vapour pressure of water at room temperature is 23.8 mm Hg. The vapour pressure of an aqueous solution of sucrose with mole fraction 0.1 is equal to :

Air contains 79% N_(2) and 21% O_(2) by volume. If the barometric pressure is 750 mm Hg . The partial pressure of oxygen is

Air contains 79% N_(2) and 21% O_(2) by volume. If the barometric pressure is 750 mm Hg . The partial pressure of oxygen is

The vapour pressure of water at room temperature is 23.8 mm Hg. The vapour pressure of an aqueous solution of sucrose with mole fraction 0.1 is equal to

The vapour pressure of water at room temperature is 23.8 mm Hg. The vapour pressure of an aqueous solution of sucrose with mole fraction 0.1 is equal to

How much water vapour is contained in a cubic room of 4m along an edge if the relative humidity 1s 50% water at 27^(@)C The vapour pressure of water at 27^(@)C is 26.7 torr (The relative humidity expresses the partial pressure of water as a per cent of water vapour pressure) .

Relative humidity id defind as the ration of partial pressure of water in air at a given temperature to the vapour pressure of water at that that temperature Calculate the mass of water per litre air at (a) 20^(@)C and 45% relative humidity (b) 0^(@)C and 95% relative humidity (c ) Discuss wether temperature or relative humidity has the greater effect on the mass of water vapour in air Given P_(H_(2)O)^(@) =17.5 torr at 20^(@)C and 4.58 torr 0^(@)C .

The temperature and the relative humidity of air are 20^(@)c and 80% on a certain day. Find the fraction of the mass of water vapour that will condence if the tempreture falls to 5^(@)C are 17.5mm and 6.5mm of mercury respectively.