What do you mean by colligative properties? Boiling point of water at 750mm is `99.63^@C`. How much sucrose is to be added to 500gm of water so that it boils at `100^@C` (given `k_b = 0.52`)

Boiling point of water at 750 mm Hg is 99.63^@C . How much sucrose is to be added to 500 g of water such that it boils at 100^@C ?

How much heat 50 gm of water at 25^@C will take to reach boiling point?

What do you mean by molal ebuloscopic constant K_b for water 0.515^@C kg mol^-1 .

What do you mean by the enthalpy of solidification of water at 0^(@)C and 1 atm pressure =- 6.02 " kJ mol"^(-1) ?

Calculate the elevation of boiling point of water when 0.6 gm urea is dissolved in 250 ml water given [ K_b 0.52 k.kg mol^(-1) ]

The mass of a copper steam boiler is 200 kg. It contains 100 kg of water at 25^(@)C.7xx10^(6) cal of heat is produced by burning 1 kg of coal and only 3% of it is absorbed by the boiler to heat water. How much coal is to be burnt to raise the temperature of the water in the boiler to its boiling point? Specific heat of copper ="0.09 cal.g"^(-1).^(@)C^(-1) .

Addition of non-volatile solute to a solvent always increases the colligative properties such as osmotic pressure. Delta P . Delta T_b and Delta T_f . All these colligative properties are directly proportional to molality if solutions are dilute. The increases in colligative properties on addition of non-volatile solute is due to increases in number of solute particles. For different aqueous solutions of 0.1 N NaCI, 0.1 N urea, 0.1 N Na_2SO_4 and 0.1 N Na_3PO_4 solution at 27^@C , the correct statements are : 1. The order of osmotic pressure is NaCI = Na_2SO_4 = Na_3PO_4 = urea 2. pi = (Delta T_b)/k_b xx RT for urea solution 3. Addition of salt on ice increases its melting point 4. Addition of salt on ice bring in melting of ice earlier