It can be given in the mathematical form as:

λ

^{0}

_{M}= v

_{+}λ

^{0}

_{+}+ v

_{-}λ

^{0}

_{-}

λ

^{0}

_{+}and λ

^{0}

_{-}are the limiting molar conductivity of cation and anion respectively.

For NaCl,

λ

^{0}

_{M}= λ

^{0}

_{Na+}+ λ

^{0}

_{Cl-}

And for Al2(SO4)3,

λ

^{0}

_{Al2(SO4)3}=2 λ

^{0}

_{Al3+}+ λ

^{0}

_{SO4 2-}

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