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Elevation in Boiling Point

State True or...

Question

State True or False.
Relative lowering of vapour pressure is a colligative property.

A

True

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B

False

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Solution

The correct option is A True
Relative lowering of vapor pressure is not dependent on the identity of solute particles in the solution but is dependent on the solute to solvent ratio. Thus the relative lowering of vapor pressure is a colligative property.

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Q. Assertion :Relative lowering of vapour pressure is equal to the mole fraction of the solvent
Reason:

Relative lowering of vapour pressure is a colligative property

Q. Assertion :Lowering of vapour pressure is not dependent on the number of species present in the solution. Reason: Lowering of vapour pressure and relative lowering of vapour pressure are colligative properties.

State True or False.

The relative lowering of vapour pressure is equal to the mole fraction of the solute in the solution.

Q. State True or False.

Vapour pressure is a colligative property.

Q. Consider the following statements and arrange in the order of true/false as given in the codes.

S_{1} :

The lowering of vapour pressure of a solvent is equal to mole fraction of the solute.

S_{2}

: Van't Hoff factor

= \frac{Normal Colligative Property}{Observed Colligative Property}

.

S_{3}

: 0.1 M aqueous

N a C l

& 0.1 M aqueous sugar solutions are isotonic.

S_{4}

: Vapour pressure of a solvent decreases with decreasing temperature.

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