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

A `5%` solution of cane sugar (molecular weight =`342`) is isotonic with a `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
`(% "age"(1))/("M. Mass" (1)) = (%"age"(2))/("M.Mass"(2))`
or `(5)/(342) = (1)/(X)` or `X = (342)/(5) = 68.4`
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