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45 g of ethylene glycol C(2)H(6)O(2) is ...

`45 g` of ethylene glycol `C_(2)H_(6)O_(2)` is mixed with `600 g` of water. Calculate (a) the freezing point depression and (b) the freezing point of solution.
Given`K_(f)=1.86 K kg mol^(-1)`.

A

272

B

271

C

270

D

274

Text Solution

Verified by Experts

The correct Answer is:
B
`Delta T_(f) = (K_(f) xx w_(B) xx 1000)/(w_(A) xx M_(B)) = (2 xx 31 xx 1000)/(500 xx 62) = 2 K`
Freezing point of solution = 273 -2 = 271 K .
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