Q.

The latent heat of vaporisation of water is 9700 cal/mole and if the boiling point is 100oC, ebullioscopic constant of water is

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a

0.513oC

b

1.026oC

c

10.26oC

d

1.832oC

answer is A.

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Detailed Solution

Kb=M1RT021000ΔHV=18×1.987×(373)21000×9700=0.513oC
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