Note 370 — Chapter X · ALUMINIUM; AMPHOTERIC HYDROXIDES; HYDROLYSIS OF SALTS. THE ALUMINIUM AND ZINC GROUPS
Reading edition
Potassium sulphate, K2SO4, reacts faintly alkaline in aqueous solution, the secondary ionization of sulphuric acid (table, p. 104) being somewhat weaker than the ionization of potassium hydroxide. We have: K2SO4 + HOH ⇄ KHSO4 + KOH or SO42− + HOH ⇄ HSO4− + HO−.