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Q.

The elevation in boiling point of a solution of 13.44 g of CuCl2 (molecular weight = 134.4, Kb=0.52 K molality−1) in 1 kg water using the following information will be:

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a

0.16

b

0.05

c

0.1

d

0.2

answer is A.

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Detailed Solution

ΔTb=1000×0.52×13.44134.4×1000×(1+2α)∵ α=1ΔTb=0.052×3=0.156
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