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The depression in freezing point of 0.01...

The depression in freezing point of `0.01 m` aqueous `CH_(3)CooH` solution is `0.02046^(@)`, `1 m` urea solution freezes at `-1.86^(@)C`. Assuming molality equal to molarity, `pH` of `CH_(3)COOH` solution is

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The correct Answer is:
3
`DeltaT_(1)=ixx1.86xx0.01`
given `DeltaT_(f)=.0205`
`becausei=1.1=1+(2-1)alpha`
`alpha=0.1` ltbr `[H]=Calpha=0.01xx0.1=10^(-3)M`
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