What should be the freezing point of aqu...

What should be the freezing point of aqueous solution containing `17g` of `C_(2)H(5)OH` is `1000g` of water (`K_(f)` for water =`1.86 deg kg mol^(-1)`)?

`-0.69^(@)C`

`0.34^(@)C`

`0.0^(@)C`

`-0.34^(@)C`

Text Solution

Verified by Experts

The correct Answer is:

`DeltaT=K_(f)xx(w_(B)xx1000)/(m_(B)xxw_(A))=1.86xx(17xx1000)/(46xx1000)=0.69`
`:.` Freezing point of solution `= 0 - 0.69 = - 0.69^(@)C`]

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