On the Acidity and Alkalinity of Ammonium Acetate
People have talked about the nature of ammonium acetate, or acid, or alkali, each holding the same opinion, but there is no agreement. Let's try it now.

Ammonium acetate is a salt of acetate ion and ammonium ion. Acetate ion, derived from weak acid acetic acid; ammonium ion, derived from weak base ammonia monohydrate.

When ammonium acetate is dissolved in water, acetate ion is hydrolyzed and combined with hydrogen ion in water, so that the concentration of hydroxide ion in the solution is relatively increased; ammonium ion is also hydrolyzed and combined with hydroxide ion in water, so that the concentration of hydrogen ion in the solution is relatively increased. The hydrolysis of the two affects each other, which is called double hydrolysis.

However, the ionization constants of acetic acid and ammonia monohydrate are similar, so the degree of hydrolysis of acetate ions and ammonium ions is equivalent. In this case, the concentration of hydrogen ions and hydroxide ions in the solution is almost equal, and the solution is neutral.

From this point of view, ammonium acetate is non-acid and non-alkali, and its solution is neutral, which is actually due to the balance of ion hydrolysis. When people think about its acidity and alkalinity, it is clear that this is not wrong.