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Calculate the temperature at which a sol...

Calculate the temperature at which a solution containing 54 gms of glucose `(C_(6) H_(12) O_(6))` in 250 gms of water will freeze. `K_(f)` for water .
`(1 . 86 K kg mol^(-1))`

A

7.6

B

`76.0`

C

`752.4`

D

759

Text Solution

Verified by Experts

The correct Answer is:
C
Moles of glucose `=18/(180) = 0.1`
Moles of water `=(178.2)/(18) =9.9 xxB = (0.1)/((0.1+9.9))= 0.01`
`((760-p))/(760) = 0.01`
`760 - p = 7.6`
`7 = 752.4 ` torr
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