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To observe an elevation of boiling point of `0.05^(@)C`, the amount of a solute (molecular weight = 100) to be added to 100 g of water `(K_(b) = 0.5)` is
A. 2 g
B. `0.5g`
C. 1 g
D. `0.75g`

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Best answer
Correct Answer - C
Elevation of boiling point,
`DeltaT_(b)=(wxxK_(b)xx1000)/(MxxW)`
`0.05=(wxx0.5xx1000)/(100xx100)orw=1g`

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