Nowadays there are acetic acid and potassium carbonate, and when they meet, there must be changes. Acetic acid is strong, and potassium carbonate is stable. However, the two are mixed, and the hydrogen of acetic acid interacts with the carbonate of potassium carbonate.
Hydrogen ions are active in acetic acid, and when they encounter potassium carbonate, they combine with carbonate. Carbonic acid is unstable, and then decomposes into water and carbon dioxide. Looking at it, there is an effervescent surge, which is the appearance of carbon dioxide escaping.
After the reaction, potassium acetate remains in the solution. The process is the recombination of ions, following the laws of chemistry. In this way, acetic acid and potassium carbonate react to change their properties and form new substances.