A solution containing 8.44 g of sucrose in 100 g of water has a vapour pressure 4.56 mm of Hg at 273K. If the vapour pressure of pure water is 4.58 mm of Hg at the same temperature, calculate the molecular weight of sucrose.

A solution of lactose containing 8.45 g of lactose in 100g of water has a vapour pressure of 4.559 mm of Hg at 0^(@)C . If the vapour pressure of pure water is 4.579 of Hg, calculate the molecular weight of lactose.

An aqueous solution containing liquid A(M.Wt.=128) 64% by weight has a vapour pressure of 145mm . Find the vapour pressure A. If that of water is 155mm at the same temperature.

4.375 g of a substance when dissolved in 36.0 g of water, lowered its vapour pressure by 0.5 mm at a given temperature. The vapour pressure of water at this temperature is 25.0 mm . Calculate the molecular weight of solute.

How many grams of sucrose must be added to 360g of water to lower the vapour pressure by 1.19mm Hg at a temperatue at which vapour pressure of pure water is 25 mmHg ?

5g of compound A was dissolved in 100g of water at 303K . The vapour pressure of the solution was found to be 4.16 kilopascal. If the vapour pressure of pure water is 4.24 kPa at this temperature, what is the molecular mass of A ?

A solution is prepared by dissolving 2.0g of sucrose and 2.0 gurea in 100g of water at 298 K. Calculate the vapour pressure of the solution, if the vapour pressure of pure water at 298 K is 23.756 torr. (Molecular weight of urea = 60 and sucrose = 342).

A solution is made by dissolving 1.0 gurea and 2.0g sucrose in 100 g water at 298 K. predict the vapour pressure of solution if the vapour pressure of water at 298 Kis 23.756 torr.

Moles of Na_(2)SO_(4) to be dissoved in 12 mole water to lower its vapour pressure by 10 mm Hg at a temperature at which vapour pressure of pure water is 50 mm is:

Calculate the vapour pressure of 10% (w/w) aqueous glucose solution at 30^@C , if vapour pressure of pure water is 31.8 mm.