A solution is prepared by dissolving 2.50 g of Co(NH3)2Cl2 in 500.0 mL solution which results in a yellow color solution with a wavelength of 93.8 nm. 1. Calculate the density of this solution 2. Calculate the molarity of this soultion. 3. Write the Noble gas electron configuration of the element X.

Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter3: Atomic Shells And Classical Models Of Chemical Bonding
Section: Chapter Questions
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A solution is prepared by dissolving 2.50 g of Co(NH3)2Cl2 in 500.0 mL solution which results in a yellow color solution with a wavelength of 93.8 nm.

1. Calculate the density of this solution

2. Calculate the molarity of this soultion.

3. Write the Noble gas electron configuration of the element X.

4. If an electron relaxes from the 6th energy level at this wavelength, what is the final energy level where this electron will reside?

5. Calculate the number of photons by determing the number of molecules in the sample of Co(NH3)2CI2

6. Calculate the total energy that the soultion will produce.

7. Is this solution exothermic or endothermic?

8. Determine the oxidation number of the metal in this complex.

9. Is the metal ion in this complex paramagnetic or diamagnetic?

 

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