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Water Property: Dissociation of Water Theme: Homeostasis

pH. Water Property: Dissociation of Water Theme: Homeostasis. Preview/Review. In your notes draw a pH scale. On it, identify: Numbers associated with acids/bases/neutral 3 examples of acids (including one human example) 3 examples of bases (including one human example). pH scale.

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Water Property: Dissociation of Water Theme: Homeostasis

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  1. pH Water Property: Dissociation of Water Theme: Homeostasis

  2. Preview/Review • In your notes draw a pH scale. On it, identify: • Numbers associated with acids/bases/neutral • 3 examples of acids (including one human example) • 3 examples of bases (including one human example)

  3. pH scale • How does the concentration of H+ ions relate to pH? • ph=-log[H+]

  4. How do H+ ions form? • Dissociation of water:

  5. Equilibrium…aka homeostasis • What happens to the pH of water when • [H+] ions = [OH-] ions • How would the balance shift if hydrochloric acid was added to water?

  6. Examples in living things! • Interactions of water with CO2 causes changes in pH. • Major cause of decline of coral reefs. • Reason your brain senses you need to breathe!

  7. Increased CO2 levels leading to death of Corals

  8. Increased CO2 levels cause you to breathe!

  9. Hypothesis: • Bromothymol blue is an indicator for acids. • What is an indicator? • Blue: >pH 7 • Yellow: <pH 6 • What will happen if your teacher breathes into the bromothymol blue? • State in an if…then…because

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