Define freezing point of a substance.

Define melting point of a substance.State the effect of pressure on it.

Ethylene glycol (molar mass = 62gmol^-1) is a common automobile antifreeze. Calculate the freezing point of a solution containing 12.4g of this substance in 100g of water. Would it be advisable to keep this susbtance in the car radiators during summer? Given K_f for water = 1.86 K kg//mol K_b for water = 0.612 K kg//mol

Define solubility of a substance.

A 5% solution (by mass) of canesugar in water has freezing point of 271K. Calculate the freezing point of a 5% glucose in water if freezing point of pure water is 273.15K.

With increase in pressure ,the melting point of substance which contract on melting is

The depression in freezing point of water observed for the same amount of acetic acid, trichloroacetic acid and trifluoroacetic acid increases in the order given above. Explain briefly.

A solution of sucrose (molecular mass 342 u) is prepared by dissolving 6.84g in 100g of water at 298K. Calculate the freezing point of the solution ( K_f for water, 1.86K Kgmol^-1 ).

Calculate the freezing point of an aqueous solution containing 10.50g of MgBr_2 = 184g, K_f for water = 1.86 K kg mol^-1 .

Calculate the depression in freezing point of water when 20g of CH_3CH_2CHClCOOH is added to 500g of water. (Given Ka=1.4xx10^(-3)K_f=1.86 )