1.

If equivalent conductance of 1M benzoic aid is 12.8`ohm^(-1)cm^(2)` and 288.42 `ohm^(-1)cm^(2)` respectively. Its egree of dissociation isA. 0.39B. `3.9%`C. 0.0035D. `0.039%`

Answer» Correct Answer - B
`wedge_(m_(C_(6)H_(5)COOH))^(@)=wedge_((C_(6)H_(5)COO^(-)))^(@)+wedge_((H^(+)))^(@)`
`=42+288.42=330.42`
`alpha=(wedge_(m)^(@))/(wedge_(m)^(@))=(12.8)/(330.42)=3.9%`


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