Question

Why does sodium chloride freezes at lower temperature than water?

Answer 1

Answer:

When salt (NaCl) is added to water, it decreases the intermolecular attraction as it creates attractions between water molecules. Thus the freezing point decreases after adding NaCl.

Answer 2

Answer:

Why do sodium chloride solution freeze at a lower temperature than water ? Sodium chloride is non volatile solute. When sodium chloride is dissolved in a solvent , its vapour pressure decreases. Therefore, the solution will boil at a higher temperature and the solvent will freeze at a lower temperatur.