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A 5% solution of cane sugar (molecular w...

A `5%` solution of cane sugar (molecular weight=342) is isotonic with `1%` solution of substance `X`.The molecular weight of `X` is

A

171.2

B

68.4

C

34.2

D

136.2

Text Solution

Verified by Experts

The correct Answer is:
B
For non-electrolytic solutions, if isotonic,
`C_(1)=C_(2)`
=`(5 xx 1000)/(342 xx 100)=(1 xx 1000)/(Mw_(2) xx 100)`
`:. Mw_(2) =68.4`
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