To a concentrated buffer of pH 9.0 was added an equal volume of an aqueous solution that was 0.20 M in each of the ions Ca2+, Cd2+, and Cu2+. The expected precipitate would consist of:   salt:    calcium hydroxide    cadmium hydroxide   copper(II) hydroxide Ksp:        4.0 × 10-6               2.0 × 10-14                   1.8 × 10-19   only Ca(OH)2 only Cd(OH)2 only Cu(OH)2 only Cd(OH)2and Cu(OH)2 Ca(OH)2, Cd(OH)2, and Cu(OH)2

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Chapter1: Chemical Foundations
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  1. To a concentrated buffer of pH 9.0 was added an equal volume of an aqueous solution that was 0.20 M in each of the ions Ca2+, Cd2+, and Cu2+. The expected precipitate would consist of:

 

salt:    calcium hydroxide    cadmium hydroxide   copper(II) hydroxide

Ksp:        4.0 × 10-6               2.0 × 10-14                   1.8 × 10-19

 

  1. only Ca(OH)2
  2. only Cd(OH)2
  3. only Cu(OH)2
  4. only Cd(OH)2and Cu(OH)2
  5. Ca(OH)2, Cd(OH)2, and Cu(OH)2
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