A 5% solution of cane sugar (molar mass=342) is isotonic with 0.877% soluton of urea. Calculate the molar mass of urea.
A solution containing 10.2 g of gylcerine per litre is found to be isotonic with a 2% solution of glucose. Calculate the molar mass of glycerine (molar mass=180).
The boiling point of benzene is 353.23 K. When 1.80g of a non-volatile solute was dissolved in 90 g of benzene, the boiling point is raised to 354.11 K. Calculate the molar mass of the solute.
The vapour pressure of water at 293K is 0.0231 bar and the vapour pressure of a solution of 108.24 g of a compound in 1000 g of water at the same temperature is 0.0228 bar. Calculate the molar mass of the solute.
Osmotic pressure of a solution containing 3.5 g of dissolved protein per 50cc of a solution is 25 mm. at 37^@C . Calculate the molar mass of protein.
The vapour pressure of a 5% aqueous solution of a non-volatile organic substances at 373K is 745 mm. calculate the molar mass of the solute. (Vapour pressure of water at 373K=760mm Hg).
The boiling point of a solution containing 1.5 g of a dichlorobenzene in 100 g of benzene was higher by 0.268^@C . Calculate the molar mass of dichlorobenzene (K_b for benzene=2.62 degree molal^(-1)) .
