The elevation in boiling point for 1 molal solution of glucose is 2 K. The depression in freezing point for 2 molal solution of glucose in the same solvent is 2 K. The relation between and is:

Question

The elevation in boiling point for 1 molal solution of glucose is 2 K. The depression in freezing point for 2 molal solution of glucose in the same solvent is 2 K. The relation between  and  is:

Canvas Classes · Accepted Answer

Strategy:
 Use the definitions of  and  to solve for the constants  and , then determine the mathematical relationship between them.

Step 1: Determine Kb
For 1 molal glucose: .

Step 2: Determine Kf
For 2 molal glucose: .

Step 3: Compare results
 and . Thus .

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