Synthesis Post-Lab

Synthesis Post-Lab - Q Question Text 4 Scoring Scheme...

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Q# Question Text 4) Scoring Scheme: 3-2-1-1 Which of the following reasons correctly explains the color changes that take place when ethylenediamine (C 2 N 2 H 8 ) is added to the solution of cobalt(II) chloride? Your Answer: c. The water ligands surrounding the cobalt metal center are being replaced by ethylenediamine and chloride ligands which results in a different crystal field splitting. Thus, the energy associated with electron transitions between the d-orbitals will differ for the two compounds showing a color change. You Scored 3 points out of 3 Possible 5) Scoring Scheme: 3-2-1-1 Which of the following balanced chemical equations correctly represents the chemical reaction that takes place when ethylenediamine (C 2 N 2 H 8 ) is added to the solution of cobalt(II) chloride to form dichlorobis(ethylenediamine)cobalt(II)? Your Answer: b. [Co(H 2 O) 6 ]Cl 2 + 2 en -> Co(en) 2 Cl 2 + 6 H 2 O You Scored 3 points out of 3 Possible 6) Scoring Scheme: 3-3-2-1 Which of the following reasons correctly explains the color changes that take place when 8 mL of the 10% H 2 O 2 is added to the solution of dichlorobis(ethylenediamine)cobalt(II)? Your Answer:
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This note was uploaded on 03/08/2011 for the course CHE 2C taught by Professor Enderle during the Summer '08 term at UC Davis.

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Synthesis Post-Lab - Q Question Text 4 Scoring Scheme...

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