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Elevation in Boiling Point

If the elevat...

Question

If the elevation in boiling point of a solution of 10 g of solute (mol. wt. = 100) in 100 g of water is $△ T_{b},$ the ebullioscopic constant of water is :

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100 T_{b}

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△ T_{b}

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\frac{△ T_{b}}{10}

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Solution

The correct option is C $△ T_{b}$
$m = \frac{1000 \times k_{b} \times w}{W \times △ T b}$

$△ T_{b} = \frac{1000 \times k_{b} \times w}{W \times m}$

$△ T_{b} = \frac{1000 \times k_{b} \times 10}{100 \times 100}$

$△ T_{b} = k_{b}$

Hence, option C is correct.

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