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The boiling point of benzene is 353.23 K...

The boiling point of benzene is 353.23 K when 1.80 g of a non-volatile, non-ionising solute was dissolved in 90 g of benzene, the boiling point is raised to 354.11 K. Calculate the molar mass of solute.
`" "`[Given `K_(b)` for benzene = 2.53 K kg `mol^(-1)`]

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`M_(2) = (1000 xx W_(2) xx k_(b))/(W_(1) xx Delta T_(b))`
= `(1000 xx 1.8 xx 2.53)/(0.88 xx 90 )`
`M_(2) = 58 g mol^(-1)` .
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The boiling point of benzene is 353.23 K. When 1.80 g of a non - volatile non - ionisable solute was dissolved in 90 g of benzene, the boiling point raised to 354.11 K.

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