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Properties of Aqueous Solutions Part 1 Test

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7 Written Questions

6 Multiple Choice Questions

  1. RbOH, HBr
  2. pure water
  3. 9.73
  4. 0.0856
  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 0.255 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)

          

  2. 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

          

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

          

  4. A solution is prepared by dissolving 0.23 mol of hydrazoic acid and 0.27 mol of sodium azide in water sufficient to yield 1.00 L of solution.The addition of 0.05 mol of NaOH to this buffer solution causes the pH to increase slightly. The pH does not increase drastically because the NaOH reacts with the __________ present in the buffer solution. The Ka of hydrazoic acid is 1.9 × 10-5.hydrazoic acid

          

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

          

  6. 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.1.9 x 10^-4

          

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