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The equivalent conductance of 1   M benzoic acid is 12.8 o h m - 1 c m 2 and if the conductance of benzoate ion and H + ion at infinite dilution are 42 and 288.42 o h m - 1 c m 2 respectively. Calculate percentage of degree of dissociation. Report your answer by rounding upto nearest whole number.

Correct answer

4

Step-by-step solution

Λ m ( C 6 H 5 C O O H ) o = Λ ( C 6 H 5 C O O - ) o + Λ ( H + ) o = 42 + 288.42 = 330.42 α = Λ m c Λ m o = 12.8 330.42 = 3.9%

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