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A solution of urea contains 8.6 g per li...

A solution of urea contains 8.6 g per litre. It is isotonic with 5% solution of a non-volatile solute. The molecular mass of the solute will be :

A

`348.9`

B

`34.89`

C

3489

D

`861.2`

Text Solution

Verified by Experts

The correct Answer is:
A
For two non-electrolytic solution if isotonic, `C_(1)=C_(2)`
`therefore (8.6)/(60xx1)=(5xx1000)/(m.wt. xx 100) therefore m = 348.9`
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