Question

you are given two samples of water labelled as A and B . sample A boils at 100 degree celsius and sample B boils at 102 degree celsius . which sample of water will not freeze at 0 degree celsius? comment

Answer 1

Pure water boils at 100 degree Celsius so A is pure water. B is impure water or any other liquid

Answer 2

It is because sample ‘B’ boils at 102°C while the boiling point of pure water is 100°C. It means this sample contains impurities. Only pure substance has sharp melting point.