Specific conductance of 0.1M ${\mathrm{CH}}_3\mathrm{COOH} \mathrm{at} 25°\mathrm{C}$ is $3.9\times {10}^{-4} {\mathrm{ohm}}^{-1} {\mathrm{cm}}^{-1}$if ${\mathrm{\lambda }}^{\infty }\left({\mathrm{H}}_3{\mathrm{O}}^{+}\right) \& {\mathrm{\lambda }}^{\infty }\left({\mathrm{CH}}_3{\mathrm{COO}}^{-}\right)$  at $25°\mathrm{C}$ are 349.0 and $41.0 {\mathrm{ohm}}^{-1} {\mathrm{cm}}^2{\mathrm{mol}}^{-1}$ respectively degree of ionization of ${\mathrm{CH}}_3\mathrm{COOH}$ at the given concentration is