Post Lab Questions (synthesis of Co (salen) complexes) 1) What is the purpose of the DMSO? What role does it play in the oxygen adsorption process? Would other solvents work as well? Which ones and why? 2) Why was it necessary to perform the reaction of cobalt acetate with the salenH2 under nitrogen? Why is the product not air sensitive once formed? 3) A Which of the following molecules might also expect to form complexes with Co(salen) in DMSO: N2, NO, NO2, CO2, CN, CI, CO, H2, SO3. 4) Give the mechanism of: The binding of Oz to (Co(salen)]2 is a redox reaction, where two Co(salen) molecules are oxidized by 1 e each to a final oxidation state of +3 at cobalt, and the O2 molecule is reduced by 2 e, resulting in the formation of peroxide (022-). Give the mechanism of peroxide (022-) formation by using arrow- pushing to show the electron flow