Question 3 0 out of 1 points identify the ligands in

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Chemistry & Chemical Reactivity
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Chapter 22 / Exercise 52
Chemistry & Chemical Reactivity
Kotz/Treichel
Expert Verified
Question 30 out of 1 pointsIdentify the ligand(s) in [Co(NH3)5Cl]Cl2.Selected Answer:[None Given]
2
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Chemistry & Chemical Reactivity
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Chapter 22 / Exercise 52
Chemistry & Chemical Reactivity
Kotz/Treichel
Expert Verified
Question 40 out of 1 pointsIdentify the coordination number for [Co(NH3)5Cl]Cl2.Selected Answer:[None Given]
Question 50 out of 1 pointsIdentify the oxidation number of the cobalt in [Co(NH3)5Cl]Cl2.Selected Answer:[None Given]
Question 60 out of 1 pointsThe precipitate that forms in the qualitative analysis of the chloride ions is AgCl. Calculate the mass of AgCl that should be produced when an excess of AgNO3is reacted with 0.2105 g of [Co(NH3)5Cl]Cl2.
HINT: Determine the number of moles of AgCl that are produced by each mole of [Co(NH3)5Cl]Cl2.Selected Answer:[None Given]
Question 70 out of 1 pointsIn an experiment from last semester, many of you observed a green solution containing [Ni(H2O)6]2+. Upon adding an excess of ethylenediamine (en), you observed a purple solution containing [Ni(en)3]2+. What does this indicate about the relative size of the crystal field splitting for the water ligand compared to the ethylenediamine ligand? And how do you know?SelectedAnswer:[None Given]Answers:The color you observe is the color of the absorbed light. Since it has a lower energy for the complex with water ligands, the water ligand must have a smaller crystal field splitting.The color you observe is the color of the transmittedlight. The color of the absorbed light has a longer wavelength for the compound containing only waterligands. Therefore it has a lower energy and the water ligand must have a smaller crystal field splitting.
The color you observe is the color of the absorbed light. Since it has a higher energy for the complex with water ligands, the water ligand must have a larger crystal field splitting.The color you observe is the color of the transmittedlight. The color of the absorbed light has a shorter wavelength for the compound containing only waterligands. Therefore it has a higher energy and the water ligand must have a larger crystal field splitting.ResponseFeedback:This is the hardest part of understanding experiments in crystal field theory. 1. You need to recognize that you observe transmitted light and the color of the absorbed light is the complementary color. 2. You then need to check on a color wheel to see that the complementary color of green is red. Red has a wavelength of about 650-700nm. The complementary color of purple is yellow, with a wavelength of about 550 nm.

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