The vapour pressure of water at `20^@C` is 17 mm Hg. What is the vapour pressure of solution containing 2.8 g urea in 50 g of water?

The vapour pressure of water at 20^@ is 17mm, Hg. Calculate the vapour pressure of a solution containing 2.8 g of urea (NH_2CONH_2) in 50 g of water.

What is lowering of vapour pressure of a solution.

The vapour pressure of water at 20^(@)C is 17.54 mm . When 20 g of a non-ionic , substance in dissolved by 0.30 mm . What is the molecular weight of the substance ?

A sampel of O_2 gas is called over water at 23^@C at a barometric pressure of 751 mm Hg (vapour pressure of water at 23^@C is 21mm Hg) The partial pressure of O_2 ga sin the sample collected is

The vapour pressure of acetone at 20^(@) C is 185 torr when 1.2 g of a non - volattile substance was dissolved in 100 g of acetone at 20^(@) C ,its vapour pressure was 183 torr . The molar mass ( g mol ^(-1) ) of the substance . is molar mass ( g mol ^(-1)) of the substance is ______.

Why the vapour pressure of solution containing non-valatile solute is lower than that of pure solvent?

Benzene and toluene form nearly ideal solutions At 20^(@)C , the vapour pressure of benzene is 75 torr and that of toluene is 22 torr . The partial vapour pressure of benzene at 20^(@)C for a solution containing 78 g of benezene and 46 g of toluene in torr is _______.

The vapour pressure of water at 300 K in a closed container is 0.4 atm . If the volume of the container is doubled , its vapour pressure at 300 K will be _____.

The vapour pressure of a pure liquid A is 70 torr at 27^(@)C It forms and ideal solution with another liquid B. The mole fraction of B is 0.2 and the total vapour pressure of the solution is 84 torr at 27^@ C .the vapour pressure of pure liquid B at . the vapur pressure of pure liquid B at 27^(@)C is _____.

A solutions is prepared by dissolving 394 g of a nonvolatile solute in 622 g of water. The vapour pressure of solution is found to be 30.74 mm Hg at 30^@C . If vapour pressure of water at 30^@C is 31.8mm Hg, what is the molar mass of solute?