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A solution containing 4 g of a non-volat...

A solution containing `4 g` of a non-volatile organic solute per `100 mL` was found to have an osmotic pressure equal to `500 cm` of mercury at `27^(@)C`. The molecular weight of solute is

A

14.97

B

149.7

C

1697

D

1.497

Text Solution

Verified by Experts

The correct Answer is:
B
`pi V = W_(2)/M_(2)RT,`
`500/76 xx 100/1000 = 4/M_(2) xx 0.0821 xx 300,`
`M_(2) = 149.6`
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