1. Acids

3. Dissolve in water – sour taste Litmus dye: blue → red React with some metals –Produce hydrogen gas and a salt

4. Arrhenius Definition Acid – releases H + ion in water

6. polyprotic acids H 2 SO 4

7. Bronsted-Lowry Definition Acid – proton donor (H + )

8. Acid Strength Strong acids – ionize all the way –Hydrochloric Acid –Sulfuric Acid –Nitric Acid Weak acids – only ionize a little –Acetic Acid –Lactic Acid –Ascorbic Acid –Phosphoric Acid –Citric Acid Can damage tissue If concentrated Found in many foods

11. pH The concentration of H + ion in pure water is 1 x 10 -7 M. pH stands for power of H + ion. –If concentration is 1 x 10 -e then pH is the negative of the exponent of the H ion conc. –If conc. Is not 1 x, then pH = -log 10 [H + ] Therefore, in pure water, the pH = 7 If pH < 7 then the solution is acidic If pH > 7 then the solution is basic pH = 7 is neutral

12. pH balanced shampoo shampoo Hair Remover Oven and drain cleaner 7.3 to 7.5

13. Antacids Are of course bases Neutralize stomach acid (HCl) More is not better

16. H26 – C11 14, 16, 17, 19, 20, 24, 25, 28 - 31, 33, 51 - 55, 57, 62, 63, 74, 79