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Understanding the pH Scale: Acidity, Basicity & More

Learn about the pH scale, which measures acidity and basicity. Each step represents a factor of 10. Explore pH differences and how Søren Sorensen contributed to understanding acids and bases. Compare Richter Scale and pH.

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Understanding the pH Scale: Acidity, Basicity & More

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  1. pH scale : measures acidity/basicity ACID BASE 10x 100x 10x 10x 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 NEUTRAL Each step on pH scale represents a factor of 10. pH 5 vs. pH 6(10X more acidic) pH 3 vs. pH 5 (100X different) pH 8 vs. pH 13 (100,000X different)

  2. pH scale : measures acidity/basicity Søren Sorensen (1868 - 1939) ACID BASE 10x 100x 10x 10x 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 NEUTRAL Each step on pH scale represents a factor of 10. pH 5 vs. pH 6(10X more acidic) pH 3 vs. pH 5 (100X different) pH 8 vs. pH 13 (100,000X different)

  3. Richter Scale - Earthquakes 6 5 7 . 4 3 2 1

  4. [OH-] [H+] = pH = -log [H1+] Acid Base pH = 7 [H+] [OH-] Acidic Basic Neutral

  5. radius = 112.8 cm radius = 35.7 cm radius = 11.3 cm radius = 3.6 cm radius = 1.1 cm radius = 0.1128 cm . pH = 2 pH = 3 pH = 1 . pH = 4 5 6

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