A student dissolved 1.50 g of solid Ni(NO3)2 in 30 mL distilled H2O and subjected it to a hot water bath for 5 minutes. After heating, a light green solution was produced which was then separated into six test tubes. To determine the relative stability of Ni2+ complexes, distilled H2O, 3.0 M 1,10-phenanthroline (phen), and 12 M NH3 were used as ligand sources. The observations are as follows (see the attached photo): Compute for the formation constant of [Ni(NH3)6]2+ in test tube 3 given the following equilibrium concentrations: [Ni(H2O)6 2+] = 2.5 x 10-2 M;[NH3] = 0.010 M; [Ni(NH3)6 2+] = 2.1 x 10-5 M.
A student dissolved 1.50 g of solid Ni(NO3)2 in 30 mL distilled H2O and subjected it to a hot water bath for 5 minutes. After heating, a light green solution was produced which was then separated into six test tubes. To determine the relative stability of Ni2+ complexes, distilled H2O, 3.0 M 1,10-phenanthroline (phen), and 12 M NH3 were used as ligand sources. The observations are as follows (see the attached photo): Compute for the formation constant of [Ni(NH3)6]2+ in test tube 3 given the following equilibrium concentrations: [Ni(H2O)6 2+] = 2.5 x 10-2 M;[NH3] = 0.010 M; [Ni(NH3)6 2+] = 2.1 x 10-5 M.
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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A student dissolved 1.50 g of solid Ni(NO3)2 in 30 mL distilled H2O and subjected it to a hot water bath for 5 minutes. After heating, a light green solution was produced which was then separated into six test tubes. To
determine the relative stability of Ni2+ complexes, distilled H2O, 3.0 M 1,10-phenanthroline (phen), and 12 M NH3 were used as ligand sources. The observations are as follows (see the attached photo):
Compute for the formation constant of [Ni(NH3)6]2+ in test tube 3 given the following equilibrium concentrations: [Ni(H2O)6 2+] = 2.5 x 10-2 M;[NH3] = 0.010 M; [Ni(NH3)6 2+] = 2.1 x 10-5 M.
Transcribed Image Text:Test
Reagents added
Observations
tube
1
light green solution
pink solution
dark blue solution
Light green solution; turned dark
blue upon addition of NH3
pink solution
dark blue solution; turned pink
upon addition of phen
5 drops of H20
5 drops of phen
5 drops of NH3
5 drops of H20, then 5 drops of NH3
2
3
4
5 drops of phen, then 5 drops of NH3
5 drops of NH3, then 5 drops of phen
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