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Glucose is added to 1 litre water to suc...

Glucose is added to `1` litre water to such an extent that `(Delta T_(f))/(K_(f))` becomes equal to `(1)/(1000)`, the weight of glucose added is:

A

(a) `0.32 g`

B

(b) `0.42 g`

C

( c) `0.22 g`

D

(d) `0.18 g`

Text Solution

Verified by Experts

The correct Answer is:
D
`Delta T_(f) = K_(f) xx "molality" = K_(f) xx (w xx 1000)/(m xx W)`
`:. (Delta T_(f))/(K_(f)) = (w xx 1000)/(m xx W)`
or `(1)/(1000) = (w xx 1000)/(180 xx 1000)`
`:. w = 0.18 g`
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