1.

Depression of freezing point of `0.01` molal aq. `CH_(3)COOH` solution is `0.02046^(@)` . 1 molal urea solution freezes at `-1.86^(@)`C . Assuming molarity equal to molarity , pH of `CH_(3)COOH` solution is :

Answer» Correct Answer - 3
`DeltaT_(t)=ixx1.86xx0.01`
Given `DeltaT_(t)=0205`
`:.i=1.1=1+(2-1)alpha`
`alpha=0.1`
`[H^(+)]=Calpha=0.01xx0.1=10^(-3)M`


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