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Calculate the cryoscopic constant in (K ...

Calculate the cryoscopic constant in `(K Kg mol^(-1))` of cyclohexane. Given that its heat of fusion is `2630J//mol` and it freezing point is `6.6^(@)C`.

A

`20.76`

B

`28.33`

C

`23.15`

D

`18.15`

Text Solution

Verified by Experts

The correct Answer is:
A
`K_(f)=(M_("solvent").RT_(f)^(2))/(1000.DeltaH_("Fusion"))`
`=(84xx8.314xx(279.60)^(2))/(1000xx2630)=20.76`
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