d
\(\,\lambda _{eq.}^\infty \,[A{l_2}{(S{O_4})_3}]\,\, = \,\,\frac{1}{3}\,\,\lambda _{A{l^{ + 3}}}^\infty \, + \,\,\frac{1}{2}\,\,\lambda _{SO_4^{ - 2}}^\infty \)

\(\,\,\frac{1}{3}\,\, \times \,\,189\,\, + \,\,\frac{1}{2}\,\, \times \,\,160\,\, = \,\,143\,\,{\Omega ^{ - 1}}c{m^2}e{q^{ - 1}}\)

મોલર વાહકતા \(\, = \,\,\lambda _{eq.}^\infty \, \times \,\,V.F.\,\, = \,\,143\,\, \times \,\,6\,\, = \,\,858\,\,{\Omega ^{ - 1}}c{m^2}mo{l^{ - 1}}\)