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Vapour pressure is influenced by many factors. Raoult's law relates vapour pressure of a liquid with its mole fraction in the solution. False statement among the following is

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Relative lowering of vapour pressure of a solution of non-volatile solute is equal to mole fraction of solute in the solution.

Lowering of vapour pressure of solution of non-volatile solute is directly proportional to mole fraction of solute in the solution.

Vapour pressure of solution of non-volatile solute is directly proportional to mole fraction of solvent in the solution.

Relative lowering of vapour pressure of a solution of non-volatile solute increses with increase in temperature.

answer is D.

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Detailed Solution

(1) $\frac{p^{0} - p}{p^{0}} {= X}_{2} - Raoult' s Law$

Where $X_{2} = M . F of solute$

(2)

$\frac{p^{0} - p}{p^{0}} = X_{2} (p^{0} - p) = p^{0} X_{2} ∴ p^{0} - p ∝^{} X_{2}$

(2) is correct.
(3)
$p_{S} = p^{0} X_{1} p_{S} α X_{1}$

(3) is correct.

(4) RLVP is equal to $X_{2}$ , independent of temperature

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