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  • You are given two samples of water labelled as ‘A’ and ‘B’. Sample ‘A’ boils at 100°C and sample ‘B’ boils at 102°C. Which sample of water will not freeze at 0°C? Comment.

You are given two samples of water labelled as ‘A’ and ‘B’. Sample ‘A’ boils at 100^{\circ}C and sample ‘B’ boils at 102^{\circ}C. Which sample of water will not freeze at 0^{\circ}C? Comment.

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Solution:
When any non-volatile solute (impurities) is added in water, It causes elevation in boiling point as well as depression in freezing point.
Therefore impure water will have boiling point more than 100^{\circ}C and freezing point will be less than 0^{\circ}C,
Sample ‘B’ which boils at 102^{\circ}C contains impurities. It will not freeze at 0^{\circ}C.

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