Λ∘eqorΛ∞(NH4OH)=Λ∞eq(NH4Cl)+Λ∞eq(NaOH)−Λ∞eq(NaCl)
=(149.74+248.1−126.4)
=271.44 ohm−1cm2eq−1
The values ∧∞eq for NH4Cl,NaOH and NaCl are 149.74, 248.1 and 126.4 ohm−1 cm2 eqv−1 . The value of ∧∞eq of NH4OH :