Molar conductance of 0.01M weak monoprotic acid is 45 mhocm2mole-1. Molar conductane of the same acid at infinite dilution is 450 mhocm2mol-1. pH of the acid solution is

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answer is 3.

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Detailed Solution

For weak electrolytes; α = λcλ∞ = 45450 = 0.1;H+ = Cα given C=0.01M = 0.01×0.1 = 10–3 pH = 3

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