12. When solving the problem, write down the Nernst distribution law for the system described in the problem statement.
An aqueous solution of salicylic acid with a concentration of 0.036 mol/l is in equilibrium with a 0.018 mol/l solution of salicylic acid in benzene. Calculate the distribution coefficient of salicylic acid between benzene and water if salicylic acid in benzene has a normal molecular weight, but in water it is dissociated to a degree of 0.89.

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