1.

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:

Answer»

2.0 G
0.5 g
1.0 g
0.75 g

Solution :`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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