Question

Which one of the following statements is false?
(a) Raoult’s law states that the vapour pressure of a
component over a binary solution of volatile liquids is
directly proportional to its mole fraction
(b) Two sucrose solutions of the same molality prepared
in different solvents will have the same depression of
freezing point
(c) The correct order of osmotic pressures of 0.01 M
solution of each compound is BaCl₂ > KCl > CH₃COOH
> glucose
(d) In the equation osmotic pressure π = MRT, M is the
molarity of the solution

Answer 1

Answer:

Sorry I Sorry I didn't get back to you earlier but I was out of town for a few days

Answer 2

The statement which is false is:

(a) Raoult’s law states that the vapour pressure of a component over a binary solution of volatile liquids is directly proportional to its mole fraction

• This statement is true

(b) Two sucrose solutions of the same molality prepared in different solvents will have the same depression of freezing point

• This statement is false as depression of freezing point depends on number of particles but it is a characteristics feature of the nature of solvent also. So for different solvent, extent of depression may vary.

(c) The correct order of osmotic pressures of 0.01 M solution of each compound is BaCl₂ > KCl > CH₃COOH > glucose

• This statement is true

(d) In the equation osmotic pressure π = MRT, M is the molarity of the solution

• This statement is true