Question

Between 2M glucose solution and 1M glucose solution which will have lower freezing point? and why?

Answer 1

“1M Glucose solution will have lower freezing point because the solution having minimum depression in freezing point will have highest freezing point.  For Boiling point, if we see, the increase in number of moles, the molality also increases which is directly proportional to elevation in boiling point.”  The same is true for the freezing point too.

Answer 2

A solution has a lower freezing point than a pure solvent. The higher the concentration the lower the freezing point. This is called freezing point depression.

Solute-solvent interactions prevent solvent from going into solid phase thus a low freezing point.

Therefore the glucose solution which has a concentration of 2M has a lower freezing point.