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Chemistry - Acids and Bases: pH scale

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Slide 1 : pH scale 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 ACID BASE 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) : measures acidity/basicity 10x 10x 10x 100x

Slide 2 : pH scale 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 ACID BASE 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) : measures acidity/basicity 10x 10x 10x 100x Søren Sorensen (1868 - 1939)

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

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

Slide 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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George Kalgreadis
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