Solutions Test ...

1.4 m aqueous solution of a weak electrolyte AB₂ ionizes 20%, then, state boiling point and freezing point of the solution respectively.

Solute substance in a 1.4 m aqueous solution associates by 25%, then, find the boiling point and freezing point of solution; where, solute exists as trimer in the solution; thus, n = 3. (K_b = 0.512^o C • kg • mole^-1, K_f = 1.86_oC • kg • mole_-1)

Molecular mass of a weak acid HA is 60gm/mo1 Ifs experimental molecular mass in its 0.7 M aqueous solution obtained from colligative properties is 50gm/mo1. Then calculate ionistion consteint of weak acid HA.

At constant temperature, the total pressure of a homogeneous mixture of gas-A and gas-B in a closed container collected on water is 2.0 bar. Their ratio of mole fraction is 1.6 If the values of their K_H are 2.4 × 10⁺⁴ bur and 4.8 × 10⁴ bar respectively then calculate its ration of mole fraction when dissolved in H₂O.

If one of the colligative property of 0.3m aqueous ti sdn. of Na cl and x m aqueous solution of H₂SO₄ then what would be the approximate vulvae of aqueous solution of H₂SO₄ ? (Density of ´ m H2So4 solution = 1.185 gm/ml)

At one bar pressure the value of ratio of mole fraction of O₂ and N₂ gas in air is 1:4 The values of KH of O₂ and N₂ are 3.3 × 10⁷ Torr and 6.60 × 10⁷ Torr respectively. Then calculate the value of ratio of mole fractions of O₂ and N₂ gases will be. (1 Torr = 1mm)

According to Boyle-van’t - Hoff law at a consistent temperature, osmotic pressure of a solution is directly proportional to its morality. It means p a C, where C = morality of solution \\ π = Kc Then calculate the value of k in sI unit at 24^o c temperature. (R = 8. 314 J/mole k)

Boiling point of an aqueous solution of urea at one bar pressure is 373.41 k. Then at a constant temperature, calculate the percentage decrease in vapour pressure of a solution compared to (k_b = 0.512 k.kg. mol^-1)

Calculate P^H of a solution prepared by mixing equal volume of an aqueous solution of HCI having P^H = 2 and P^H = 5 at 298 k temp.

Which of the following is the correct formula for Raoult’s law when non-volatile solute is mixed with liquid solvent. where n=mole traction of solute N= mok fraction of solvent, P= vapour pressure of solution Po = vapour pressure of pure solvent and DP=Decrease in vapour pressure.