At 2 5 ∘ C molar conductance of 0.1 molar aqueous solution of ammonium hydroxide is 9.54 ohm − 1 cm 2 mol − 1 and at infinite dilution its molar conductance is 238 ohm − 1 cm 2 mol − 1 . The degree of

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At 2 5 ∘ C molar conductance of 0.1 molar aqueous solution of ammonium hydroxide is 9.54 ohm − 1 cm 2 mol − 1 and at infinite dilution its molar conductance is 238 ohm − 1 cm 2 mol − 1 . The degree of ionisation of ammonium hydroxide at the same concentration and temperature isNEET 2013 (All India)

TestHub · Accepted Answer

Given, molar conductance at 0.1 M concentration, λ c ​ = 9.54 Ω − 1 cm 2 mol − 1 Molar conductance at infinite dilution, λ c ∞ ​ = 238 Ω − 1 cm 2 mol − 1 We know that, degree of ionisation, α ​ = λ c ∞ ​ λ c ​ ​ × 100 = 238 9.54 ​ × 100 = 4.008% ​

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