Solutions Question 83

Question: The latent heat of vapourisation of water is 9700,Cal/mole and if the b.p. is 100oC , ebullioscopic constant of water is [CBSE PMT 1989]

Options:

A) 0.513oC

B) 1.026oC

C) 10.26oC

D) 1.832oC

Show Answer

Answer:

Correct Answer: A

Solution:

Kb=M1RT021000ΔHV=18×1.987×(373)21000×9700

=0.513oC



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