At 298 ~K the molar conductivities at infinite dilution ( _m^ ) of NH ₄ Cl , KOH and KCl are 152.8, 272.6 and 149.8 ~S ~cm cmol ⁻¹ respectively. The _m^ of NH ₄ OH in S cm ^2 ~mol ⁻¹ and % dissociation of 0.01 M NH ₄ OH with _m=25.1 ~S ~cm

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At 298 ~K the molar conductivities at infinite dilution ( _m^ ) of NH ₄ Cl , KOH and KCl are 152.8, 272.6 and 149.8 ~S ~cm cmol ⁻¹ respectively. The _m^ of NH ₄ OH in S cm ^2 ~mol ⁻¹ and % dissociation of 0.01 M NH ₄ OH with _m=25.1 ~S ~cm ^2 ~mol ⁻¹ at the same temperature are

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Correct answer: B. 275.6,9.1

aligned _m^ NH ₄ OH & = _m^ ( NH ₄ Cl + KOH )- _m^ ( KCl ) & =152.8+272.6-149.8 & =275.6 ~S ~cm ^2 ~mol ⁻¹ aligned Degree of dissociation aligned ( )= _m _m^ & = 25.1 275.6 & =0.091 aligned % degree of dissociation =9.1 %

At 298 ~K the molar conductivities at infinite dilution ( _m^ ) of NH ₄ Cl , KOH and KCl are 152.8, 272.6 and 149.8 ~S ~cm cmol ⁻¹ respectively. The _m^ of NH ₄ OH in S cm ^2 ~mol ⁻¹ and % dissociation of 0.01 M NH ₄ OH with _m=25.1 ~S ~cm ^2 ~mol ⁻¹ at the same temperature are

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