ACID-BASE PROBLEM SET

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ACID-BASE PROBLEM SET
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• 1. Consider a 1.0 M solution of the weak base
  aniline C6H5NH2 (Kb 4.0 x 10-10).
• What is the pH of this solution ?  
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• 2. 0.10 M CH3NH3Cl has a pH of 5.86. Calculate
• Kb for CH3NH2 ?

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• 3. The pH of a 0.10 M solution of hydrazoic acid
  (HN3) is observed to be 3.0. Calculate the Ka for
  HN3.

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• 4. Calculate the pH of a 0.100 M solution of
  NaBO2 ? (Ka 5.8 x 10-10 for HBO2)

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• 5. When 0.100 mole of sodium arsenate (Na3AsO4)
  is added to enough water to make 1.00 L of
  solution, the pH of the solution is found to be
  11.50. What is the Ka of HAsO42-?