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Molality

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Question

According to the Raoult's law the relative decrease in the solvent vapour pressure over the solution containing a nonvolatile solute is equal to the

A

the mole fraction of the solute.

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B

the viscosity of solution.

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C

the number of moles of the solute.

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D

the mole fraction of the solvent

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Solution

The correct option is B
the viscosity of solution.

Relative lowering of vapour pressure is directly proportional to the mole fraction of solute.

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