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0.6gof a solute is dissolved in 0.1litre...

`0.6g`of a solute is dissolved in `0.1`litre of a solvent which develops an osmotic pressure of 1.23 at m at `27^(@)C`.The molecular mass of the substance is

A

`149.5 g "mol"^(-1)`

B

`120 g "mol"^(-1)`

C

`430 g "mol"^(-1)`

D

None.

Text Solution

Verified by Experts

The correct Answer is:
B
`M=(WRT)/(pi V)= (0.6 xx 0.082 xx 300)/(1.23 xx 0.1)=120`
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