Molar conductance of 2 M H 2 A acid is 10 S cm 2 mol − 1 . Molar conductance of H 2 A at infinite dilution is 400 S cm 2 mol − 1 . assuming both H + ions have same degree of ionisation. Which stat

Question

Molar conductance of 2 M H 2 ​ A acid is 10 S cm 2 mol − 1 . Molar conductance of H 2 ​ A at infinite dilution is 400 S cm 2 mol − 1 . assuming both H + ions have same degree of ionisation. Which statement is/are correct?

TestHub · Accepted Answer

α = A m 0 ​ A m ​ ​ − 400 10 ​ = 40 1 ​ = 2.5% At equation, C ( 1 − α ) H 2 ​ A ​ ⇌ 2 C α 2 H + ​ + C α A 2 ​ K e q ​ = C ( 1 − α ) ( 2 C α ) 2 × C α ​ Putting C = 2 M , α = 0.025 K eq ​ = 2.56 × 1 0 − 4 [ H + ] = 2 C α = 0.1 = 1 0 − 1 p H = − lo g 1 0 − 1 = 1

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