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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)`)?

A

`-0.69^(@)C`

B

`0.34^(@)C`

C

`0.0^(@)C`

D

`-0.34^(@)C`

Text Solution

Verified by Experts

The correct Answer is:
A
`DeltaT_(f)=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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