Boiling point of water at 750mm Hg is `99.63^@C` How much sucrose is to be added to 500g of water such that it boils at `100^@C K_b`(water)= 0.52K kg mol^(-1)`

How much ethyl alcohol should be added to 1L of water so that the solution will not freeze at -10^@C. (K_(f)" of water "=1.86" K kg mol"^(-1)) .

A scientist wants to perform an experiment in aqueous solution in a hill station where the boiling point of water is 98.98^(@)C . How much urea (mol.wt 60 g mol^(-1) ) is to be added by him to 2 kg of water to get the boiling point 100^(@)C at the same place? ( K_(b) ofwater = 0.51K kg mol^(-1) )

How much water should be added to 3M HCl to get 1L 0.25M HCl ?

An aqueous solution of glucose containing 12 g in 100g of water was found to boil at 100.34^@C. Calculate K_b for water in K mol ""^(-1) kg.

A glass vassel after washing contain 54 g of water in it. How much heat must be supplied to evaporate this water? Standard enthalpy of vapourisation of water is 40.79 kJ mol^-1 .