Salt hydrolysis. What is the reaction of the medium in aqueous solutions of the following salts
| May 9, 2021 | education
Salt hydrolysis. What is the reaction of the medium in aqueous solutions of the following salts: aluminum chloride, potassium nitrate, ammonium acetate, sodium sulfite?
Salts formed by weak acids and bases undergo hydrolysis. Among the compounds AlCl3, KNO3, CH3COONH4, Na2SO3, KNO3 is not hydrolyzed, since this salt is formed by a strong acid and a strong base. The medium of the KNO3 solution is neutral.
KNO3 = K + + NO3-
The medium of an aqueous solution of AlCl3 is acidic.
Al3 + + H2O = Al (OH) 2+ + H +
The medium of an aqueous solution of Na2SO3 is alkaline.
SO32- + H2O = HSO3- + OH-
The medium of the CH3COONH4 aqueous solution is neutral.
NH4 + + H2O = NH4OH + H +
CH3COO- + H2O = CH3COOH + OH-
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