On whether ammonium acetate is a buffer
Now we want to distinguish whether ammonium acetate is a buffer. Buffers can resist the addition or dilution of a small amount of acid and alkali in the solution, which causes the pH to change greatly.

Ammonium acetate is a salt composed of acetate ion and ammonium ion. Acetic acid is a weak acid, and the hydrolysis of ammonium ion also tends to be acidic or alkaline.

When a small amount of acid is added to a solution containing ammonium acetate, acetate ions can combine with hydrogen ions to form acetic acid. Because acetic acid is a weak acid and partially ionized, hydrogen ions can be consumed to inhibit the pH value of the solution from falling sharply; if a small amount of alkali is added, ammonium ions can react with hydroxide ions to generate ammonia monohydrate, which is also a weak electrolyte and partially ionized, which can inhibit the pH value of the solution from rising sharply.

Therefore, ammonium acetate can maintain the relative stability of the pH of the solution to a certain extent, and has the characteristics of a buffer. Therefore, it can be broken, and ammonium acetate is a buffer.