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79.If equivalent conductance of 1M benzoic acid is12.8 ohm em2 eq & if the equivalentconductances of benzoate ion & H' ion at infinitedilution are 42 & 288.42 ohm1 cm2 eqrespectively, then its degree of dissociation is:-(1) 39% (2) 3.9% (3) 0.35% (4)0.039%

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