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Acids and Bases

Acids and Bases. Acids. Proton donor H + Donor Turns litmus Red pH < 7.0 Tastes sour Reacts with a base to make H 2 O React with metals . Acids. Found in many foods (makes you pucker) Used in manufacturing Allows for life. Bases. Proton acceptor O H - Donor Turns Litmus blue

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Acids and Bases

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  1. Acids and Bases

  2. Acids • Proton donor • H+ Donor • Turns litmus Red • pH < 7.0 • Tastes sour • Reacts with a base to make H2 O • React with metals

  3. Acids • Found in many foods (makes you pucker) • Used in manufacturing • Allows for life

  4. Bases • Proton acceptor • O H- Donor • Turns Litmus blue • pH > 7.0 • Tastes bitter • Reacts with acid to make H2 O • Feel “Slippery”

  5. Bases • Found in a few foods (Makes you “Blech”) • Used in manufacturing • Allows for life • Causes rapid disintegration of cell membranes, giving the slippery feel • More dangerous than acids to cells

  6. Foods Fruits Green veggies Batteries Some Fertilizers Stomach Citric acid Folic acid Sulfuric acid Nitric acid Hydrochloric acid Acids Around You

  7. Food: Quick breads Antacids (anti-acid) Cleaners Construction Fertilizers Baking soda Calcium carbonate Magnesium hydroxide Ammonium hydroxide (ammonia) Sodium hydroxide (Lye) Cement Ammonium hydroxide (ammonia) Bases Around You

  8. Acid – Base Reactions • When reacting an acid and a base, you get the general reaction of: • Acid + Base → Water + Salt • (YOU NEED TO KNOW THIS!!!!!!)

  9. Acid – Base Reaction • A very common reaction: • H Cl + Na O H → H2O + Na Cl Acid Base Water Salt • What type of reaction is this??? • That’s right!!! Double Replacement!!!!! • (The peasants rejoice)

  10. Acid - Base Reactions • When you look at a reaction: • The acid will almost always have an “H” in it • The base will almost always have an “OH” in it • Hey look!!! If the acid has an “H”, and the base has an “OH”… “H” + “OH” make H2 O… and that is water!!!

  11. Reactions • 2H N O3 + Ca (O H)2 → 2H2 O + Ca (N O3)2 • Find and label the parts of this reaction • 3H Cl + Al (O H)3 → 3H2 O + Al Cl3 • Find and label the parts of this reaction

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