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MHT CET Chemistry question

ChemistryEquilibriumMHT CET

At 25 ℃, the molar conductance of 0.007 M hydrofluoric acid is 150 and = 500 . The value of the dissociation constant of the acid at the given concentration at 25℃ is

Answer: (D)

Solution

α = Λ/Λ° = 150/500 = 0.3 and Ka = Cα²/(1 − α) = 0.007 × 0.09/0.7 = 9 × ; (a), (b) and (c) do not

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Question ID VK-066813