Highly Acidic, pH 1 - 3, Red in universal indicator, High concentration of H+ ions, Extremely low concentration of OH- ions, Example: HCl, Mild Acidic, pH 4 - 6, Orange or Yellow in universal indicator, Moderate concentration of H+ ions, Low concentration of OH- ions, Example: CH3COOH, Neutral, pH 7, Green in universal indicator, Equal concentrations of H+ ions and OH- ions, Example: water, Mild Basic, pH 8 - 10, Blue in universal indicator, Low concentration of H+ ions, Moderate concentration of OH- ions, Example: NH4OH, Highly Basic, pH 11 - 14, Purple in universal indicator, Very low concentration of H+ ions, High concentration of OH- ions, Example: KOH

Acid Neutral Basic

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