1. Acids

2. Objectives Describe the properties of acids.s Explain the process of ionization.s Identify common acids by formula. 3. Properties of Acidss Acids taste sour!s Acids conduct electricity! (electrolytes)s Acids have specific reactions with chemicalscalled indicators Common indicatorss Bromthymol Blue + Acid = Yellows Phenolphthalein + Acid = stays clear (no change)s Litmus + Acid = Reds Cabbage Juice + Acid = Red 4. Demo: Carbonating Waters Respiration: C6H12O6 + O2 --> H2O + CO2s When you breathe out, CO2 is dissolved inthe water. When CO2 mixes with water itbecomes carbonic acid which changes thecolor of the Bromthymol Blue to yellow!Bromothymol Blue Indicator Reaction 5. Ionization of Acidss Acids always have Hydrogen in the front of their formula The H separates when the acid is mixed with water, becoming a Hydrogen Ion or H+ The H+ attaches to water molecules making H3O+ or a Hydronium Ions H+ + H O -> H O+23 The ions in solutions are why acids conduct electricity The stronger the acid- the more complete thedisassociation of H+ from the formula (see next) 6. Common Acidss Strong Acids s HCl (Hydrochloric Acid) = found in your stomach! s H SO (Sulfuric Acid) = Industrial uses, car batteries2 4 s HNO3 (Nitric Acid) = Making TNT, making fertilizers.s Weak Acids s H2CO3 (Carbonic Acid) = Carbonating Beverages s H3BO3 (Boric Acid) = Washing eyes s HC2H3O2 (Acetic Acid) = Vinegar s H3C6H5O7 (Citric Acid) = Making soft drinks, found in fruit 7. Car Batteries: Sulfuric Acid 8. Citrus Fruit: Citric Acid 9. Soda: Phosphoric Acid,Carbonic Acid, Citric Acid 10. Vinegar: Acetic Acid 11. Vitamin C: Ascorbic Acid 12. Scurvy: Not enough vitamin C 13. Aspirin: Acetylsalicylic Acid (ASA) 14. Borax: Boric Acid