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To observe an elevation of boiling point...

To observe an elevation of boiling point of `0.0^(@)C`, the amount of th solte (Molar mass 100 g `mol^(-1)`) to be added to 100 g of water `(K_(b)=0.5 K mol^(-1))` is:

A

2.0 g

B

0.5 g

C

1.0 g

D

0.75 g

Text Solution

Verified by Experts

The correct Answer is:
a
`W_(B)=(M_(B)xxW_(A)xxDeltaT_(b))/K_(b)`
`=((100g mol^(-1))xx(0.1 kg)xx0.5 K)/((0.5"K kg" mol^(-1)))=1.0g`
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