Question

# A sample of water under study was found to boil at $102°\mathrm{C}$ at normal temperature and pressure. Is the water pure? Will this water freeze at $0°\mathrm{C}$? Comment.

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Solution

## Freezing of water:Freezing is the solidification, in which the liquid will turn into the solid when the temperature is lowered below the freezing point. Basically the boiling point of the pure water is $100°\mathrm{C}$ at $1\mathrm{atm}$ and, similarly the freezing point of the pure water would be $0°\mathrm{C}$.The sample of the water under the study will boil at $102°\mathrm{C}$ at the normal pressure.Hence, the sample water present is not pure.So, since the sample of water is not pure , it will not freeze at $0°\mathrm{C}$The sample of water will freeze at a temperature below $0°\mathrm{C}$Therefore, NO the sample water will not freeze at $0°\mathrm{C}$.

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