Solutions Test ...

1.0 molal aqueous solution of a substance boils at 100.55^o C ; then, at what approximate temperature, it freezes ? (Kb = 0.51^o C – kg - mole-1 and Kb = 1.86^o C – kg - mole-1)

Ionic substances are completely dissociates, then aqueous solution of which of the following substances having least freezing point ?

0.2 M aqueous solution of NH₄Cl is isotonic with which of the following aqueous solution ?

At constant temperature, osmotic pressure of an aqueous solution of 1.5 M NH₄NO₃ and xN Al₂(SO₄)₃ are equal, then mention the value of X. (Assume that ionic solid substances completely dissociates in the solution)

At constant temperature, vapour pressure of an aqueous solution of 1.5M NH₄NO₃ and xM Al₂(SO₄)₃ are equal; then calculate the molality of an aqueous solution of Al₂(SO₄)₃. (Assume that ionic solid substances completely dissociates in the solution)

Boiling point of the aqueous solution prepared by dissolving 1.5 mole substances in 1000 gm water at 1 atmosphere pressure is 100.5^oC; then which of the following alternative is correct for the solution ? (Kb = 0.152^oC – kg - mole-1)

Which of the following aqueous solution is isotonic with 0.2 m Na₄[CoF₆] solution ? (Assume that ionic solid substances completely dissociates in the solution)

Which type of solution, moist air is ?

Aqueous solutions are separated by semipermeable membrane. For which pair of the given solution having maximum osmotic pressure ? (Assume that ionic solid substances completely dissociates in the solution)

At constant temperature, the vapour pressure of an aqueous solution of Na₂SO₄ and 0.3 m Na₃PO₄ are approximately equal; then, what would be the molality of an aqueous solution of Na₂SO₄ ? (Assume that ionic solid substances completely dissociates in the solution)