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

The boiling point of pure water is 100^∘C. at 1atm. The freezing point of pure water is  O^∘C. The sample of water under study boils at 102^∘C at normal pressure. Hence, the sample is not pure water. Since the sample of water is not pure, it will not freeze at  O^∘C. It will freeze at a temperature below O^∘C.