At 25° C molar conductance of 0.1 molar aqueous solution of ammonium hydroxide is 9.54 $\mathrm{o}\mathrm{h}{\mathrm{m}}^{-1}\mathrm{c}{\mathrm{m}}^2\mathrm{m}\mathrm{o}{\mathrm{l}}^{-1}$ and at infinite dilution molar conductance is 238 $\mathrm{o}\mathrm{h}{\mathrm{m}}^{-1}\mathrm{c}{\mathrm{m}}^2\mathrm{m}\mathrm{o}{\mathrm{l}}^{-1}$ . The degree of ionisation of ammonium hydroxide at the same concentration and temperature is