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  • An X molal solution of a compound in benzene has mole fraction of solute equal to 0.2. The value of X isOption: 1 3.2<div class='qna-op

An X molal solution of a compound in benzene has mole fraction of solute equal to 0.2. The value of X is

Option: 1

3.2


Option: 2

14


Option: 3

4


Option: 4

2


Answers (1)

Relation between concentration terms (Molality & Mole fraction) -

m= \frac{x_{solute}\times 1000}{x_{solvent}\times Molecular\ Mass\ of \ Solvent}

- wherein

m= molality

x_{solute}= mole\: f\! raction\ of\ solute 

x_{solvent}= mole\: f\! raction\ of\ solvent

 

 \frac{X}{X+\frac{1000}{78}} = 0.2 

x = 3.2

Posted by

Ramraj Saini

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