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7 Written questions

6 Multiple choice questions

  1. pure water
  2. KOH, HI
  3. 1.9 x 10^-4
  4. 0.0176 M NH3
  5. 0.821 M HF and 0.909 M NaF
  6. KNO3

6 True/False questions

  1. What is the pH of a buffer solution that is 0.211 M in lactic acid and 0.111 M in sodium lactate? The Ka of lactic acid is 1.4 x 10^-4.3.57 cat. blue grape

          

  2. What is the pH of a buffer solution that is 0.255 M in hypochlorous acid (HClO) and 0.3333 M in sodium hypochlorite? The Ka of hypochlorous acid is 3.8 x 10^-8.7.54 (blue dog)

          

  3. Which one of the following pairs cannot be mixed together to form a buffer solution?KOH, HI

          

  4. Of the following solutions which has the greatest buffering capacity?0.821 M HC2H3O2 and 0.713 M NaC2H3O2

          

  5. Determine the Ksp for magnesium hydroxide (Mg(OH)2) where the solubility of Mg(OH)2 is 1.4 x 10^-4 M.Elven 1.1

          

  6. The pH of a solution prepared by mixing 45.0 mL of 0.183 M KOH and 65.0 ml of 0.145 M HCl is _________.7.00

          

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