The limiting molar conductivity of NH ₄ OH is 238 ~S ~cm ^2 ~mol ⁻¹ . At 25^ C , molar conductance of 0.1 M aqueous solution of ammonium hydroxide is 9.54 ~S ~cm ^2 ~mol ⁻¹ . The degree of ionisation of NH ₄ OH at the same concentration and

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The limiting molar conductivity of NH ₄ OH is 238 ~S ~cm ^2 ~mol ⁻¹ . At 25^ C , molar conductance of 0.1 M aqueous solution of ammonium hydroxide is 9.54 ~S ~cm ^2 ~mol ⁻¹ . The degree of ionisation of NH ₄ OH at the same concentration and temperature is:

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Correct answer: D. 4.008%

The degree of ionisation of a weak electrolyte is given by the ratio of the molar conductivity at a given concentration _m^c to the limiting molar conductivity _m^ . = _m^c _m^ Given values are _m^c = 9.54 S cm ^2 mol ⁻¹ and _m^ = 238 S cm ^2 mol ⁻¹ . Substituting these values into the formula: = 9.54 238 0.040084 To express this as a percentage, multiply by 100: % = 0.040084 100 = 4.0084 % Answer: 4.008%

The limiting molar conductivity of NH ₄ OH is 238 ~S ~cm ^2 ~mol ⁻¹ . At 25^ C , molar conductance of 0.1 M aqueous solution of ammonium hydroxide is 9.54 ~S ~cm ^2 ~mol ⁻¹ . The degree of ionisation of NH ₄ OH at the same concentration and temperature is:

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