Lesson 6.9: Neutralizing Acids and Bases

Interactive
Neutralizing an Acid

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• The acidic solution has a greater concentration of H₃O⁺ ions than OH^- ions. When a base is added, it accepts protons from water molecules, creating more OH^- ions. The H₃O⁺ ions and indicator molecules donate protons to the OH^- ions. This lowers the concentration of H₃O⁺ ions toward neutral and changes the color of the indicator