89. Solving a chemistry problem

Specific electrical conductivity of 0.05 N acetic acid χ = 3.24⋅10–4 Ω–1⋅cm–1. Specific electrical conductivity of 0.0001 N sodium acetate χ = 7.75⋅10-6 Ohm-1⋅cm-1. Mobilities of hydrogen ions λ0Н and sodium λ0Na are respectively equal to λ0Н 349.8 and λ0Na 50.11 Ω–1⋅cm2. Find the dissociation constant of the CD of acetic acid, assuming that the salt is completely dissociated.