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7 Written questions

6 Multiple choice questions

  1. 0.821 M HF and 0.909 M NaF
  2. pure water
  3. Elven 1.1
  4. 21.2
  5. 0.0856
  6. 0.0176 M NH3

6 True/False questions

  1. What is the molar solubility of magnesium carbonate (MgCO3) in water? The solubility-product constant for MgCO3 is 3.5 x 10^-8 at 25C.KNO3

          

  2. 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

          

  3. The addition of hydrofluoric acid and ________ to water produces a buffer solution.RbOH, HBr

          

  4. Of the following solutions which has the greatest buffering capacity?0.0176 M NH3

          

  5. The Henderson-Hasselbalch equation is __________.pH= pKa + log [base]/[acid]

          

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

          

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