Ionic Equilibrium: Acids, Bases and pH

How we classify acids and bases, and measure how acidic or basic a solution is.

Acids and Bases

  • Arrhenius concept — acids produce H⁺ ions, bases produce OH⁻ ions in water
  • Bronsted-Lowry concept — acids are proton donors, bases are proton acceptors

pH Scale

The pH scale (0 to 14) measures the acidity of a solution. pH 7 is neutral; below 7 is acidic; above 7 is basic.

Lesson 16 of 26
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