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0.1 molal aqueous solution of glucose boils at 100.16^ C . What is boiling point of 0.5 molal aqueous solution of glucose?

Options

  1. A100.80^ C
  2. B100.16^ C
  3. C100.10^ C
  4. D20.8^ C

Correct answer

A. 100.80^ C

Step-by-step solution

Given: - 0.1 molal solution boils at 100.16^ C . - Boiling point elevation formula: T_b=i K_b m where m is molality. Elevation for 0.1 molal solution: T_b=100.16-100=0.16^ C Using T_b m , for 0.5 molal solution: T_b^ =0.16 0.5 0.1 =0.8^ C New Boiling Point: T_b^ =100+0.8=100.80^ C Answer: 100.80^ C , Option 1.

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