Find the mass of all molecules leaving one square centimetre of water surface per second into a saturated water vapour above it at a temperature `t = 100 ^@C`. It is assumed that `eta = 3.6 %` of all water vapour molecules falling on the water surface are retained in the liquid phase.

Assuming the saturated water vapour to be ideal, find its pressure at the temperature 101.1 ^@C .

A small amount of water and its saturated vapour are enclosed in a vessel at a temperature t = 100^@C . How much (in per cent) will the mass of the saturated vapour increase if the temperature of the system goes up by Delta T = 1.5 K ? Assume that the vapour is an ideal gas and the specific volume of water is negligible as compared to that vapour.

A closed flask contains water in all its three states, solids, liquid and vapour at 0@C . In this situation the average KE of the water molecule will be:

One mole of water being in equilibrium with a negligible amount of its saturated vapour at a temperature T_1 was completely converted into saturated vapour at a temperature T_2 . Find the entropy increment of the system. The vapour is assumed to be an ideal gas, the specific volume of the liquid is negligible on comparsion with that of the vapour.

On a certain day the vapour pressure is 14 mm of Hg for water vapour in air at 20^@C . The saturated vapour pressure is 17.5 mm. How many moles of water vapour per litre of air would be required to saturate air at this temperature ?

The densities of water and water vapour are 1.0 g*cm^(-3) and 0.0006g*cm^(-3) respectively at 100^(@)C and 1 atmm pressure. At this temperature, the total volume occupied by watrer molecules in 1L of water vapour is-

Find the specific volume of saturated water vapour under standard pressure if a decrease of pressure by Delta = 3.2 kPa is known to decrease the water boiling temperature by Delta T = 0.9 K .

The mass of water vapour in air enclosed in a certain space 60g and the mass of water vapour needed to saturate the same air with water vapour under the same condition is 100g.What is the corresponding % relative humidity ?