NAME: ________________________

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7 Written Questions

6 Multiple Choice Questions

  1. 7.54 (blue dog)
  2. pure water
  3. 7.00
  4. 0.821 M HC2H3O2 and 0.713 M NaC2H3O2
  5. NaF
  6. 0.821 M HF and 0.909 M NaF

6 True/False Questions

  1. How many milliliters of 0.0850 M NaOH are required to titrate 25.0 mL of 0.0720 M HBr to the equivalence point?21.2

          

  2. 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

          

  3. 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 × 10-5.9.73

          

  4. In which one of the following solution is silver chloride the most soluble?RbOH, HBr

          

  5. 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

          

  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.KNO3

          

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