Solutions Question 73

Question: After adding a solute freezing point of solution decreases to - 0.186. Calculate ΔTb if Kf=1.86 and Kb=0.521 . [Orissa JEE 2002, 04; MP PET/PMT 1998; AIEEE 2000]

Options:

A) 0.521

B) 0.0521

C) 1.86

D) 0.0186

Show Answer

Answer:

Correct Answer: B

Solution:

ΔTf=Kf×m
Þ 0.186=1.86×m So m=0.1 , Put the value of m in ΔTb=Kb×m

ΔTb=0.521×(0.1)=0.0521



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