1. Chapter 14 Section 2 Acid-Base Theories p. 478-482 1 Sections 1 -3 Properties of Acids & Bases Acid-Base Theories Acid-Base Reactions MODERN CHEMISTRY CHAPTER 14 ACIDS AND BASES

2. Chapter 14 Section 2 Acid-Base Theories p. 478-482 2 Section 14.3 Acid-Base Reactions

3. Chapter 14 Section 2 Acid-Base Theories p. 478-482 3  Base: the species that remains after a Bronsted-Lowry acid has given up a proton  Acid: the species that remains after a Bronsted-Lowry base has gained a proton  Differ only by a H + C0njugate Acid-Base Pairs NH 3(aq) + H 2 O (l)  NH 4 + (aq) + OH - (aq) Conjugate BASE ACID BASE Conjugate ACID NH 3(aq) + H 2 O (l)  NH 4 + (aq) + OH - (aq)

4. Chapter 14 Section 2 Acid-Base Theories p. 478-482 4 p. xx Conjugates

5. Chapter 14 Section 2 Acid-Base Theories p. 478-482 5  The stronger an acid is, the weaker its conjugate base  The stronger an base is, the weaker its conjugate acid Conjugate Acid-Base Pairs

6. Chapter 14 Section 2 Acid-Base Theories p. 478-482 6 Relative Strengths p. 485

7. Chapter 14 Section 2 Acid-Base Theories p. 478-482 7  Any species that can react as either an acid or a base.  Example: water Amphoteric Compounds NH 3(aq) + H 2 O (l)  NH 4 + (aq) + OH - (aq) HF (aq) + H 2 O (l)  F - (aq) + H 3 O + (aq) ACID BASE

8. Chapter 14 Section 2 Acid-Base Theories p. 478-482 8 p. xx Amphoteric Water

9. Chapter 14 Section 2 Acid-Base Theories p. 478-482 9 p. xx The Many Colors of Milk of Magnesia

10. Chapter 14 Section 2 Acid-Base Theories p. 478-482 10  The reaction of hydronium ions and hydroxide ions to form water molecules. Neutralization Reactions HCl (aq) + NaOH (aq)  NaCl (aq) + HOH (l) ACID + BASE  SALT + WATER H + +Cl - + Na + +OH -  Na + +Cl - + HOH H + (aq) + OH - (aq)  HOH (aq) Glencoe Disc 3

11. Chapter 14 Section 2 Acid-Base Theories p. 478-482 11  Salt – an ionic compound composed of a cation from a base and an anion from an acid Neutralization Reactions HCl (aq) + NaOH (aq)  NaCl (aq) + HOH (l) ACID + BASE  SALT + WATER Glencoe Disc 3

12. Chapter 14 Section 2 Acid-Base Theories p. 478-482 12 p. xx Neutralization Reaction

13. Chapter 14 Section 2 Acid-Base Theories p. 478-482 13 p. xx The Rainbow Tube

14. Chapter 14 Section 2 Acid-Base Theories p. 478-482 14 Ch 14 Sec 3 Homework Chapter 14 Review page 491-492 #1,2,5,7,8,9,12,15,20,22,23,26bc