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Daily Quiz – AB 1

Daily Quiz – AB 1. What does an acid do? a. Give away H + b. Take H + c. Give away OH - d. Take OH -. Daily Quiz – AB 1. A base can do any of the following except: a. Take H + b. Give away OH - c. Take OH -. Daily Quiz – AB 1. 3. Bronstead-Lowrey bases usually contain:

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Daily Quiz – AB 1

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  1. Daily Quiz – AB 1

  2. What does an acid do? a. Give away H+ b. Take H+ c. Give away OH- d. Take OH- Daily Quiz – AB 1

  3. A base can do any of the following except: a. Take H+ b. Give away OH- c. Take OH- Daily Quiz – AB 1

  4. 3. Bronstead-Lowrey bases usually contain: a. carbon b. nitrogen c. oxygen d. silicon Daily Quiz – AB 1

  5. 4. Adding ammonia (NH3) to water increases [OH-]. Where does the oxygen come from? a. air b. water c. ammonia d. there is no oxygen Daily Quiz – AB 1

  6. What does an acid do? a. Give away H+ b. Take H+ c. Give away OH- d. Take OH- Daily Quiz – AB 1

  7. What does an acid do? a. Give away H+ b. Take H+ c. Give away OH- d. Take OH- Daily Quiz – AB 1

  8. A base can do any of the following except: a. Take H+ b. Give away OH- c. Take OH- Daily Quiz – AB 1

  9. A base can do any of the following except: a. Take H+ b. Give away OH- c. Take OH- Daily Quiz – AB 1

  10. 3. Bronstead-Lowrey bases usually contain: a. carbon b. nitrogen c. oxygen d. silicon Daily Quiz – AB 1

  11. 3. Bronstead-Lowrey bases usually contain: a. carbon b. nitrogen c. oxygen d. silicon Daily Quiz – AB 1

  12. 4. Adding ammonia (NH3) to water increases [OH-]. Where does the oxygen come from? a. air b. water c. ammonia d. there is no oxygen Daily Quiz – AB 1

  13. 4. Adding ammonia (NH3) to water increases [OH-]. Where does the oxygen come from? a. air b. water c. ammonia d. there is no oxygen Daily Quiz – AB 1

  14. What is the acid ionization constant for water?

  15. H2O

  16. H2O

  17. H2O H2O ↔ H++ OH-

  18. H2O H2O ↔ H++ OH- [OH-][H+] Ka = ------------------ [H2O]

  19. H2O H2O ↔ H++ OH- [OH-][H+] Ka = ------------------ [H2O]

  20. H2O H2O ↔ H++ OH- [OH-][H+] Ka = ------------------ [H2O]

  21. Ionization Constant of Water (Kw) H2O ↔ H++ OH- [OH-][H+] Kw = ------------------ [H2O]

  22. Ionization Constant of Water (Kw) H2O ↔ H++ OH- Kw = [OH-][H+] =(1.0 x 10-7) (1.0 x 10-7) =1.0 x 10-14

  23. Ionization Constant of Water (Kw) H2O ↔ H++ OH- Kw = [OH-][H+] =(1.0 x 10-7) (1.0 x 10-7) =1.0 x 10-14

  24. Ionization Constant of Water (Kw) H2O ↔ H++ OH- Kw = [OH-][H+] =1.0 x 10-14

  25. Ionization Constant of Water (Kw) H2O ↔ H+ + OH- Kw = [OH-] [H+] =1.0 x 10-14

  26. Ionization Constant of Water (Kw) H2O ↔ H+ + OH- Kw = [OH-] [H+] =1.0 x 10-14 This is always true under standard conditions (298oK).

  27. So what?

  28. So what? So…

  29. So what? So…if the H+ ion concentration of an aqueous solution is 1.0 x 10-5 M, what is the OH- concentration?

  30. So what? So…if the H+ ion concentration of an aqueous solution is 1.0 x 10-5 M, what is the OH- concentration? Is the solution acidic or basic?

  31. So what? Kw = [OH-][H+]

  32. So what? Kw = [OH-][H+] (1.0 x 10-14) = [OH-](1.0 x 10-5)

  33. So what? Kw = [OH-][H+] (1.0 x 10-14) = [OH-](1.0 x 10-5) (1.0 x 10-14) ----------------- = [OH-] (1.0 x 10-5)

  34. So what? Kw = [OH-][H+] (1.0 x 10-14) = [OH-](1.0 x 10-5) (1.0 x 10-14) 1.0 x 10-9 = [OH-]

  35. Is the solution acidic or basic? Kw = [OH-][H+] (1.0 x 10-14) = [OH-](1.0 x 10-5) (1.0 x 10-14) 1.0 x 10-9 = [OH-]

  36. Is the solution acidic or basic? We were told:1.0 x 10-5 = [H+]

  37. Is the solution acidic or basic? We were told:1.0 x 10-5 = [H+] We calculated: 1.0 x 10-9 = [OH-]

  38. Is the solution acidic or basic? We were told:1.0 x 10-5 = [H+] We calculated: 1.0 x 10-9 = [OH-] [H] >[OH-]

  39. Is the solution acidic or basic? We were told:1.0 x 10-5 = [H+] We calculated: 1.0 x 10-9 = [OH-] [H] >[OH-] It is acidic.

  40. Homework: Read pages 608-609 Do problem 18

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