Question

A sample water under study was found to boil at 102 degrees at normal temperature and pressure is the water pure? Will this water freeze at zero degree celsius? Comment

Answer 1

We know that the boiling point of pure water is 100 degree C. Thus if a sample of water at normal temperature and pressure boils at 102 degree C, then it is not pure. Also, since the given sample is not pure, therefore it will not freeze at 0 degree C (freezing point of pure water) but at a lower temperature. 
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Answer 2

Answer:

Sample 'B' will not freeze at 0°C because it is not pure water. At one atmospheric pressure, the boiling point of pure water is 100°C and the freezing point of pure water is 0°C.

Explanation:

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$by \: eric \: taeyong$