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Ebullioscopic and cryoscopic constant fo...

Ebullioscopic and cryoscopic constant for water are `0.52` K -kg - mole and 1.86 K - kg - mole respectively . If on dissolving 5 g of `NaSO_(4)` in 45g of `H_(2)O` causes freezing point to be decreased to `-3.72^(@)C` . Calculate van't Hoff coefficient of `Na_(2)SO_(4)` :

A

1

B

`2.52`

C

`3`

D

`1.286`

Text Solution

Verified by Experts

The correct Answer is:
B
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