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Drill: Calculate the pH of: 3.0 x 10 -5 M H + 2.0 x 10 -4 M HI

Drill: Calculate the pH of: 3.0 x 10 -5 M H + 2.0 x 10 -4 M HI. Review Drill & Check HW. CHM II HW. Review PP-22 Complete the attached assignment & turn it in tomorrow. Get Data From The Standard Solution Lab. Acid-Base Equilibria. Ionization of Water. H 2 O (l) 

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Drill: Calculate the pH of: 3.0 x 10 -5 M H + 2.0 x 10 -4 M HI

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  1. Drill: Calculate the pH of: 3.0 x 10-5 M H+ 2.0 x 10-4 M HI

  2. Review Drill&Check HW

  3. CHM II HW • Review PP-22 • Complete the attached assignment & turn it in tomorrow.

  4. Get Data From The Standard Solution Lab

  5. Acid-Base Equilibria

  6. Ionization of Water H2O(l) H+(aq)+ OH-(aq) 2 H2O(l) H3O+(aq) + OH-(aq)

  7. Water Ionization Constant Kw = [H+][OH-] or Kw = [H3O+][OH-] Kw = 1.00 x 10-14 Memorize this

  8. Kw Calculations In pure water [H+] = [OH-] Kw =[H+][OH-] = 1.0 x 10-14 Let [H+] = x = [OH-]

  9. Kw Calculations Kw =[H+][OH-] = x2 Kw = x2 =1.0 x 10-14 Thus x = 1.0 x 10-7 M [H+] = x = 1.0 x 10-7 M

  10. pH of Pure Water [H+] = 1.0 x 10-7 M pH = -log[H+] pH = -log[1.0 x 10-7] pH = 7 -log 1 Thus pH = 7.00

  11. Calculate the pH of 3.3 x 10-8 M HI

  12. Calculate [H+],[OH-], pH, & pOH of 0.020 M HCl

  13. Calculate [H+] of 0.050 M H2SO4

  14. Weak Acid Ionization HA(aq) H+(aq) + A-(aq) HA(aq) + H2O(l) H3O+(aq) + A-(aq)

  15. Acid Dissociation Constant HA(aq)H+(aq) + A-(aq) • [H+][A-] • [HA] Ka =

  16. Weak Base Ionization NH3(aq) + H2O(l) NH4+(aq) + OH-(aq)

  17. Base Dissociation Constant NH3(aq) + H2O(l) NH4+(aq) + OH-(aq) • [NH4+][OH-] • [NH3] Kb =

  18. Drill: Calculate [H+],[OH-], pH, & pOH of 0.025 M KOH

  19. Review & Collect Drill & HW

  20. CHM II HW • Review PP-22 • Complete the attached assignment & turn it in tomorrow.

  21. Make sure you copy the Std KHP molarities

  22. Acid-Base Equilibria Problems

  23. Calculate [H+], [OH-], pH, & pOH of 8.0 M HC2H3O2 (HAc)Ka = 1.8 x 10-5

  24. Calculate [H+], [OH-], pH, & pOH of0.50 M NH3Kb = 1.8 x 10-5

  25. Calculate [H+],[OH-], pH, & pOH of 0.010 M HC7H5O2 (HBz)Ka = 6.4 x 10-5

  26. Drill: Calculate [H+] & pH of 0.50 M C6H5NH2Kb = 3.2 x 10-5

  27. Drill: Calculate [H+] & pH of 0.50 M NaOH

  28. Review Drill&Check HW

  29. Collect Lab

  30. CHM II HW • Review PP-22 • Complete the attached assignment & turn it in tomorrow.

  31. Calculate the Ka of 0.10 M Hquack when it ionized 5.0 % in an aqueous solution.

  32. The pH of a 0.79 M solution of Hnut is 3.10. Calculate its Ka

  33. Calculate the pH of a solution of 0.00050 M HBS : Ka = 5.0 x 10-12

  34. Drill: Calculate the pH of0.025 M HF:Ka = 6.4 x 10-4

  35. Drill: Calculatethe pH of 0.025 M QOH:Kb = 2.0 x 10-4

  36. You have 10 identical coins with 1 coin having a slight mass difference. Determine the odd coin with only 3 uses of an equal arm balance.

  37. Drill: Calculate the pH of 0.25 M HAz Ka = 2.5 x 10-3

  38. Review Drill&Check HW

  39. CHM II HW • Review PP-22 • Complete the attached problem & turn it in tomorrow.

  40. CHM II Schedule • Lab Tomorrow • Review on Wednesday • Test on Thursday • Labs attached

  41. PolyproticAcidEquilibria

  42. Calculate [H2CO3], [HCO3-], [CO3-2], [H+],[OH-], & pH of 0.44 M H2CO3Ka1 = 4.4 x 10-7Ka2 = 4.7 x 10-11

  43. Drill: Calculate the pH of 0.25 M HAz Ka = 2.5 x 10-3

  44. Review & Collect Drill

  45. Schedule • Lab: tomorrow • Lab Wednesday • Review Thursday

  46. CHM II Test covering A/B & A/B Equilibria will be on Friday

  47. Calculate [H2SeO3], [HSeO3-1], [SeO3-2], [H+],[OH-], & pH of 0.27 M H2SeO3Ka1 = 2.7 x 10-7Ka2 = 5.4 x 10-11

  48. Calculate [H3A],[H2A-], [HA-2],[A-3],[H+], &pH of 0.30 M H3A Ka1 = 3.0 x 10-7Ka2 = 5.0 x 10-11Ka3 = 4.0 x 10-15

  49. CHM II HW • Review PP-22 • Work the attached assignment

  50. Calculate the pH of0.10 M HClO Ka = 2.5 x 10-8

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