Solutions Question 84

Question: The molal elevation constant of water $ ={{0.52}^{o}}C $ . The boiling point of 1.0 molal aqueous $ KCl $ solution (assuming complete dissociation of $ KCl $ ), therefore, should be [BHU 1987]

Options:

A) $ {{100.52}^{o}}C $

B) $ {{101.04}^{o}}C $

C) $ {{99.48}^{o}}C $

D) $ {{98.96}^{o}}C $

Show Answer

Answer:

Correct Answer: B

Solution:

$ \Delta T_{b}=imk_{b}=0.52\times 1\times 2=1.04 $ . \ $ T_{b}=100+1.04={{101.04}^{o}}C $ .



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