What is the freezing point of sugar water?

The freezing point of a water solution that contains sugar is below zero. Any solute added to a pure water solvent decreases the freezing point of the water; this is called freezing point depression.

Freezing point depression is a colligative property, which is a property that is not dependent upon the chemicals present in the solution but rather on the molar ratio of the solute particles to the solvent molecules in the solution. As a result of the dependence of freezing point depression values on this molar ratio, ionic solutes, such as salt, have a greater effect on freezing point than molecular solutes, such as sugar, because of the greater number of particles present when dissolved.