<P> Freezing - point depression is the decrease of the freezing point of a solvent on addition of a non-volatile solute . Examples include salt in water , alcohol in water , or the mixing of two solids such as impurities into a finely powdered drug . In the last case , the added compound is the solute , and the original solid is thought of as the solvent . The resulting solution or solid -- solid mixture has a lower freezing point than the pure solvent or solid . This phenomenon is what causes sea water , ( a mixture of salt ( and other things ) in water ) to remain liquid at temperatures below 0 ° C ( 32 ° F ) , the freezing point of pure water . </P>
<P> Freezing - point depression is the decrease of the freezing point of a solvent on addition of a non-volatile solute . Examples include salt in water , alcohol in water , or the mixing of two solids such as impurities into a finely powdered drug . In the last case , the added compound is the solute , and the original solid is thought of as the solvent . The resulting solution or solid -- solid mixture has a lower freezing point than the pure solvent or solid . This phenomenon is what causes sea water , ( a mixture of salt ( and other things ) in water ) to remain liquid at temperatures below 0 ° C ( 32 ° F ) , the freezing point of pure water . </P>
what can lower the freezing point of water
what can lower the freezing point of water
salt alcohol
salt alcohol