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The freezing point of 5% W/W solution of...

The freezing point of 5% W/W solution of sucrose is 271 K. The freezing point of pure water is 273.15 K. What will be the freezing point of 5% W/W Glucose solution ?

A

271.2 K

B

273.15 K

C

269.07 K

D

277.23 K

Text Solution

Verified by Experts

The correct Answer is:
C
`Delta T_(f)=K_(f)xx m`
`2.15=(1000xx5)/(95xx342)xx K_(f)`
`K_(f)=13.9707`
`Delta T_(f)=(13.97xx1000xx5)/(95xx180)`
`=4.084=269.07 K`
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