1. 19.1 Acid-Base Theories> 1 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. 2. HNO 3 is a strong acid – assume it completely dissociates in water. Calculate the pH of a solution containing 1.02 g of HNO 3 in 250. mL of solution. 1. A 50 mL solution of H 2 SO 4 is neutralized by 20 mL of 2.0 M NaOH. What is the concentration of the H 2 SO 4 solution? The equation for the rxn is: H 2 SO 4(aq) + 2NaOH (aq)  Na 2 SO 4(aq) + 2H 2 O (l) Day 5 4-30 0.4 M 1.19

2. 19.1 Acid-Base Theories> 2 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. Titration LAB Lab Reports and Presentations are due Thursday 5-7!!!

3. 19.1 Acid-Base Theories> 3 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. How many moles of nitric acid are needed to neutralize 0.50 moles of calcium hydroxide? 2HNO 3 + Ca(OH) 2  Ca(NO 3 ) 2 + 2H 2 O 1 mole 5-1 day 6

4. 19.1 Acid-Base Theories> 4 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. Quarterly Exemptions: Period 1 = none Period 3 = Nick and Rochelle (pending an A in the 4 th quarter)

5. 19.1 Acid-Base Theories> 5 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. V. Salts in Solution A. Salt Hydrolysis Recall that some salts can hydrolyze water – remove hydrogen ions from or donate hydrogen ions to water (Hydrolysis of Salts Lab)  salt hydrolysis.  salts that produce acidic solutions have positive ions that release hydrogen ions to water  salts that produce basic solutions have negative ions that attract hydrogen ions from water

6. 19.1 Acid-Base Theories> 6 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. V. Salts in Solution Example: ammonium chloride  Ammonium chloride completely ionizes in water: NH 4 Cl (aq)  NH + 4(aq) + Cl - (aq)  the ammonium ion is a strong enough acid to donate a hydrogen ion to a water molecule: NH + 4(aq) + H 2 O (l)  NH 3(aq) + H 3 O + (aq)  the resulting H 3 O + ions make the solution somewhat acidic

7. 19.1 Acid-Base Theories> 7 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. V. Salts in Solution Strong acid + Strong base  neutral solution Strong acid + Weak base  acidic solution (salt’s cation releases hydrogens to water) Weak acid + Strong base  basic solution (salt’s anion attracts hydrogens from water) Titration LAB

8. 19.1 Acid-Base Theories> 8 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. Test will be: Monday 5-11 for period 3 day 6 Tuesday 5-12 for period 1 day 1

9. 19.1 Acid-Base Theories> 9 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. http://wps.prenhall.com/esm_brown_ chemistry_9/2/660/ 169060.cw/index.h tml Homework # 2 Chapter 16 – show me successful screen (100%) OR email to me – due Tues. 4-24 Answers you will need: # 3 = 2.14, acidic # 6 = pOH = 14-log[H + ] # 9 = 0.32, -0.18 # 10 = pOH = -log[OH - ] # 11 = a solution formed by adding 5.00 mL… # 12 = 13.349

10. 19.1 Acid-Base Theories> 10 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. Titration LAB Lab Reports and Presentations are due Thursday 5-7!!!

11. 19.1 Acid-Base Theories> 11 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. 1. Carbonic acid is a weak acid, if it reacts with a strong base like NaOH, what type of solution will result? 2. Write an equation for the ionization of sodium bicarbonate. 3. Write an equation for the reaction between bicarbonate ions and water NaHCO 3  Na + (aq) + HCO 3 - (aq) HCO 3 - (aq) + H 2 O (l)  H 2 CO 3(aq) + OH - (aq) Day 1 5-4

12. 19.1 Acid-Base Theories> 12 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. 1.0 * 10 -14 Arrhenius base Amphoteric K b Conjugate acid Diprotic acid Lewis acid Self-ionization Strong acid K a Weak base Bronsted-Lowry base

13. 19.1 Acid-Base Theories> 13 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. page 669 #s 27-34 – due Wednesday 5-6

14. 19.1 Acid-Base Theories> 14 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. Titration LAB Lab Reports and Presentations are due Thursday 5-7!!!

15. 19.1 Acid-Base Theories> 15 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. Test will be: Monday 5-11 for period 3 day 6 Tuesday 5-12 for period 1 day 1