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Bronstead -Lowry Acid vs. Base Strong Acid vs. Strong Base Review

Bronstead -Lowry Acid vs. Base Strong Acid vs. Strong Base Review. Objectives Today I will be able to: Differentiate between Bronstead-Lowry Acids and Bases Identify the acid, base, conjugate acid and conjugate base in a acid-base reaction Calculate the pH and pOH of a solution

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Bronstead -Lowry Acid vs. Base Strong Acid vs. Strong Base Review

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  1. Bronstead-Lowry Acid vs. BaseStrong Acid vs. Strong Base Review

  2. Objectives • Today I will be able to: • Differentiate between Bronstead-Lowry Acids and Bases • Identify the acid, base, conjugate acid and conjugate base in a acid-base reaction • Calculate the pH and pOH of a solution • Informal assessment – monitoring group interactions as they complete the whiteboard problems • Formal assessment – analyzing written answers to the warm up, practice problems and exit tickets

  3. Lesson Sequence • Evaluate: Warm Up • Evaluate/Engage – Acid/Base Whiteboard Review Game • Elaborate: Acid/Base Review Problems • Evaluate: Exit Ticket

  4. Warm Up • Complete the solubility curve worksheet

  5. Objectives • Today I will be able to: • Differentiate between Bronstead-Lowry Acids and Bases • Identify the acid, base, conjugate acid and conjugate base in a acid-base reaction • Calculate the pH and pOH of a solution

  6. Homework • Study for chapter 11/13 exam tomorrow • Begin reading and working problems for Chapter 16 – Acid/ Base Equilibria • Sections 16.1 – 16.5

  7. Agenda • Warm Up • Acid/Base – Whiteboard Review • Practice Problems • Exit Ticket

  8. Acid/Base Whiteboard Review Directions: Work in partners Each group needs a whiteboard, marker and eraser For every correct answer, the group will get a point

  9. 1. What is the difference between a Bronstead – Lowry Acid and a Bronstead – Lowry Base?

  10. 1. Answer Acids donate protons Bases accept protons

  11. NH4+ 2. Determine the conjugate base

  12. 2. Answer NH3

  13. H2PO4- 3. Determine the conjugate acid

  14. 3. Answer H3PO4

  15. HCOOH 4. Determine the conjugate base.

  16. 4. Answer COOH-

  17. CH3NH2 5. Determine the conjugate acid.

  18. 5. Answer CH3NH3+

  19. 6. Determine the acid, base, conjugate acid, conjugate base HBrO + H2O  H3O+ + BrO-

  20. 6. Answer HBrO + H2O  H3O+ + BrO- Acid base CA CB

  21. 7. Predict the products of the acid/base reaction CH3COO - + H3O+

  22. 7. Answer CH3COO - + H3O+ CH3COOH + OH -

  23. 8. Do not erase answer to 7 and determine the acid, base, conjugate acid, conjugate base

  24. 8. Answer Base, Acid, CA, CB

  25. 9. Determine the concentration of [OH-] in the solution below. Is it acidic, basic or neutral? [H+] = 0.0505 M

  26. 9. Answer [OH-] = 1.98 x 10-13 M ACIDIC

  27. 10. Determine the concentration of [OH-] in the solution below. Is it acidic, basic or neutral? [H+] = 2.5 x 10-10 M

  28. 10. Answer [OH-] = 4.0 x 10-5 M Basic

  29. 11. Complete the chart

  30. 11. ANSWERS

  31. 12. Calculate the pH for the following strong acid solution. 1.52 grams of HNO3 in 575 ml of soln

  32. 12. Answer pH = 1.377

  33. 13. Calculate the pH for the following strong base solution 1.5 x 10-3 M Sr(OH)2

  34. 13. Answer pH = 11.48

  35. Practice Problems

  36. Complete the problems using the 2015 edition of the textbook • Ch 16 Acid-Base Equilibria • Arrhenius and Bronsted-Lowry Acids and Bases 15-17, 21, 26 • Autoionization of Water 29 • pH Scale 35, 37, 39 • Strong Acids and Bases 43, 45, 47, 48

  37. Exit Ticket • Do you have any questions about tomorrow’s exam?

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