An unknown solution of the Fe-complex has an absorbance of 0.278. What is the concentration of [FeX3] 2+ in the unknown solution? e. If the unknown solution initially contained 1.000 x 10-3 M Fe2+ and 0.1000 M X ligand, what is the Keq of the equation? Hint: An ICE table may be useful here (solve for x)
Atomic Structure
The basic structure of an atom is defined as the component-level of atomic structure of an atom. Precisely speaking an atom consists of three major subatomic particles which are protons, neutrons, and electrons. Many theories have been stated for explaining the structure of an atom.
Shape of the D Orbital
Shapes of orbitals are an approximate representation of boundaries in space for finding electrons occupied in that respective orbital. D orbitals are known to have a clover leaf shape or dumbbell inside where electrons can be found.
d. An unknown solution of the Fe-complex has an absorbance of 0.278. What is the concentration of [FeX3] 2+ in the unknown solution?
e. If the unknown solution initially contained 1.000 x 10-3 M Fe2+ and 0.1000 M X ligand, what is the Keq of the equation? Hint: An ICE table may be useful here (solve for x)
![Ferrous ion reacts with an unknown ligand X to form a bright red complex with Amax = 512
nm.
Fe2"(a«) + 3X{a9) = [FeX3]²*(a«)
A standard stock solution of Fe2+ of 1.00 x 10-3 M concentration was initially prepared.
Then, five (5) 100-mL standard solutions of [FeX3]²*(aq) of varying concentrations were
prepared by taking aliquots from the standard stock solution, adding 10.0 mL of ligand X
solution, and diluting it to 100-mL. The volumes of the standard stock solutions and their
corresponding absorbances recorded with a path length of 0.50 cm at its Amax are
recorded below:
Table 5. UV-Vis data of [FeX3]2+ complex standards
Volume of Fe2+ stock, mL
Absorbance
1.00
0.079
2.00
0.165
3.00
0.255
4.00
0.359
5.00
0.447](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F55815ef3-1f3f-422e-b33b-6261d3029e90%2F872223c7-6d1b-4f66-a223-3a3940107876%2Forwa2ao_processed.png&w=3840&q=75)
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