Concentration of H+ (hydrogen) ions

• To know the nature of the solution, i.e., basic or acidic, the concentration of ions is needed.
• To identify the solution, a pH value or the concentration of H+ ions is used.
• The concentration of H+ ions increases as the solution turns acidic, whereas the concentration of H+ ions decreases when the solution is basic/alkaline.

pH Scale

• It determines the measure of the hydrogen ion H+ concentration.
• The solution is acidic if the value is less than 7, neutral when it's 7, and if it's greater than 7, the solution is basic in nature.