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7 Written questions

6 Multiple choice questions

  1. NaF
  2. hydrazoic acid
  3. 0.0856
  4. 0.0176 M NH3
  5. 0.821 M HF and 0.909 M NaF
  6. pH= pKa + log [base]/[acid]

6 True/False questions

  1. 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 _________.1.966

          

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

          

  3. Calculate the pH of a solution prepared by dissolving 0.750 mol of NH3 and 0.250 mol of NH4Cl in water sufficient to yield 1.00 L of solution. The Kb of ammonia is 1.77 x 10^-5.7.00

          

  4. The pH of a solution prepared by mixing 50.0 mL of 0.125 M KOH and 50.0 ml of 0.125 M HCl is ________.7.00

          

  5. 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^-4.7.54 (blue dog)

          

  6. Which of the following pairs cannot be mixed together to form a buffer solution? (2)KOH, HI