Henderson-Hasselbalch Equation

The Henderson-Hasselbalch equation helps describe the pH of a solution containing a weak acid and its salt. It shows how pH depends on the acid’s strength (its ability to donate hydrogen ions) and the ratio of the salt to the acid. In simple terms, if there’s more salt (which contains the base form), the pH is higher (more basic). If there’s more acid, the pH is lower (more acidic). This equation is useful in chemistry and medicine for understanding and controlling the acidity in environments like blood or solutions.