pH

pH

pH is the unit for measuring how acidic or basic a substance is.

pH is actually stands for "the power of Hydrogen" because it is actually a measure of the relative H⁺ and OH- concentrations.

pH is measured on a scale from 1-14

The lower the pH the more acidic a solution is

The higher the pH the more basic a solution is

pH 7 is considered neutral because it has equal concentration of H⁺ and OH^- ions

A strong acid releases more H⁺ ions and is therefore more acidic and has a lower pH. Increasing the concentration of an acid also increases the concentration of H⁺ ions making the solution more acidic / lowering the pH.

A strong base releases more OH^- ions and is therefore more basic and has a higher pH. Increasing the concentration of a base also increases the concentration of OH^- ions making the solution more basic / increasing the pH.

pH is a measure of the relative H+ and OH+ ion concentrations

Low pH = high H⁺ : low OH^-

Neutral pH = equal H⁺ : OH^-

High pH = low H⁺ : high OH^-