If the solution #1 has an absorbance of 0.219 at equilibrium, calculate the [Fe(SCN)2+] in the solution using the line equation y=3189x-0.03392

Q/ Calculate the oxidation state of Lead in [Pb(SC(NH₂)2}6](NO3)2] ? and Calculate the molecular weight of the complex ?

Given: CN^- is a stronger field ligand compared to SCN^-. Briefly explain why a complex formed between Fe^3+and CN^- would absorb electromagnetic radiation at a shorter wavelength (greater energy) relative to FeSCN^2+

When a certain strong-field ligand forms a tetrahedral complex with Zn 2+ cation, the energies of the valence d orbitals on the zinc atom are split according to this electron box diagram: energy in kJ/mol -350 -400 ху yz XZ -450 -500 -550 -600 2 2 x -y -650 Using this diagram, answer the following questions. How many unpaired d electron spins does the zinc atom have? paramagnetic Is the complex paramagnetic or diamagnetic? diamagnetic

Consider the following reaction:Al + 3KOH + 3H2C2O4 ∙ 2H2O → K3Al(C2O4)3 ∙ 3H2O + 6HO + (3/2)H21.00 g 20.0 mL 14.0 g6.00 M What is the theoretical yield of the complex formed in the reaction?

True or False: (answer directly) 1. If a solution does not form any precipitate when BaCl2 and AgNO3 are separately added, then it is merely distilled water. 2. [Ni(en)3]2+ has higher crystal field splitting energy than [Ni(H2O)6]2+. 3. When solid Ca(OH)2 was dissolved in 0.10 M CaCl2, the solubility product constant was lowered. 4. [Co(NO2)6]3- is an orange octahedral complex with an IUPAC name of hexanitrocobalt(III). 5. In the solubility equilibrium experiment, a saturated solution of Ca(OH)2 maintained in ice bath holds more dissolved calcium than at room temperature. 6. In the hydrogen peroxide system, the detergent is used to detect the formation of H2O molecules. 7. In the selective precipitation experiment, the silver precipitate with lower Ksp dissolves more easily upon the addition of NH3. 8. Frost-Ebsworth diagrams can predict both disproportionation and comproportionation reactions. 9. [Fe(H2O)5SCN]2+, [Ni(en)3]2+ and [Zn(OH)4]2- are octahedral complexes. 10. Reversible…

4. With the data provided below, calculate the extinction coefficient (e) for [Fe(SCN)]²+. Then, determine the absorbance of a 7.50 x 10-³ M solution of [Fe(SCN)]²+. The cuvette used has a path length of 1.00 cm. Hint: you should determine the value of the extinction coefficient first since that does not change at the same wavelength. Absorbance (@ 460 nm) 0.400 0.200 0.100 Concentration of [Fe(SCN)]²+ 10.0 x 10-³ M 5.00 x 10-³ M 2.50 x 10-³ M

Consider the metal complex below. H₂C H₂N H₂N H₂C H₂ C H₂ NH₂ Co NH₂ ||C/ CI + The oxidation state of the metal in this complex is