Electrochemistry

The limiting molar conductivity of \(\mathrm{NH}_4 \mathrm{OH}\) is \(238 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1}\). At \(25^{\circ} \mathrm{C}\), molar conductance of \(0.1 \mathrm{M}\) aqueous solution of ammonium hydroxide is \(9.54 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1}\). The degree of ionisation of \(\mathrm{NH}_4 \mathrm{OH}\) at the same concentration and temperature is: