Hi,

Ethylene glycol (antifreeze) is used in the cooling of a car radiator during the winter because it has a much lower freezing point than the water. The specific heat of antifreeze (pure or mixed with water) is lower than that of pure water.

Solutions containing liquids are commonly expressed in this unit. For example, the 35% (v/v) solution of ethylene an antifreeze i s used in cars for cooling the engine . At this concentration, the antifreeze lowers the freezing point of water to the 255.4K (–17.6°C).

This concept will help.