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If the elevation in boiling point of a solution of 10 g of solute (molecular weight = 100) in 100 g of water is `Delta T_(b)`, the ebullioscopic constant of water is
A. `(Delta T_(b))/10`
B. `Delta T_(b)`
C. `10 Delta T_(b)`
D. `100 Delta T_(b)`

1 Answer

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Best answer
Correct Answer - B
`M_(2) = (1000 xx K_(b) xx W_(2))/(W_(1) xx Delta T_(b))`
`:. K_(b) = (M_(2) xx W_(1) xx Delta T_(b))/(1000 xx W_(2))=(100 xx 100 xx Delta T_(b))/(1000 xx 10) = Delta T_(b)`

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