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

Question

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

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

Monjur Alahi

4 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - 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`

4 views Answered 2023-02-05 15:29