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What is depression of freezing point ? E...

What is depression of freezing point ? Explain.

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The freezing poiunt of a substance may be defined as the temperature at which the vapour pressure of the substance in its liquid phase is equal to its vapour pressure in the solid phase.
At any temperature the vapour pressure of solution is lower than that of pure solvent. The lowering of freezing point in solution as compared to solvent is known as depression of frezing point.
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