Equilibria in acetic acid: Ionic association constant of acetamidium perchlorate and acid-base equilibrium constant of acetamidium acetate at 105.7°

Abstract

In acetic acid at 105.7° acetamidium perchlorate has an ionic association constant KA = 0.0491 x 10⁶ l. mole^-1, a limiting equivalent conductivity A, = 79.4 cm² Ω^-1 equiv.^-1, and a centre-to-centre distance between the ions å = 4.67 Ǻ. The acid-base equilibrium constant for acetamidium acetate K_B = [ΣNH₃Ac⁺ OAc^-]/ [NH₂Ac] increases slightly with increasing dielectric constant.