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A solution containing 4.2 g of urea in 5...

A solution containing 4.2 g of urea in 500 ml was found to be isotonic with a 5% ( wt./vol.)solution of an organic non-volatile solute. The molar mass of the solute is

A

35.71

B

325.8

C

357.1

D

418.6

Text Solution

Verified by Experts

The correct Answer is:
C
For isotonic solutions
`C_(1)=C_(2)`
`(4.2xx1000)/(60xx500)=(5xx1000)/(Mxx100)`
`:.M=(5xx500xx60)/(100xx4.2)`
`=357.1`
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