Q.

The boiling point elevation constant is given as where the various symbols have their usual meanings

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a

Kb=M1RTb+2/ΔvapHm

b

Kb=MlR/Tb2ΔvapHm

c

Kb=M1Tb2/RΔvavHm

d

Kb=ΔvapHm/M1RTb+2

answer is A.

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Detailed Solution

The elevation in the boiling point of a solution can be described by the following formulaΔTb=Kbmi

The value of this constant can be given as,

Kb=M1RTb+2/ΔvapHm.

Thus the option A is correct.

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