Balance the following chemical reaction:
Co(NO3)2 + _NH3(aq) + (NH4)2CO3 + H2O2 → [Co(NH3)4CO3]NO3 + _NH4NO3 +_H2O.
What is the limiting reagent in the reaction?
Calculate the theoretical yield and percent yield of [Co(NH3)4CO3]NO3 and [Co(NH3)5Cl]Cl2. Be sure to consider the significant figures involved in the weighing of the reactants. Comment on possible reasons as to why the percent yield is not exactly 100%.
What is the purpose of each reagent in the reactions? Why was it used in the synthesis?
Draw the most likely structures of Co(NO3)2▪6H2O, [Co(NH3)5Cl]Cl2, and [Co(NH3)4CO3]NO3. Name each of the compounds.
How can you maximize the purity of each compound?
Interpret the IR spectra and an assignment of peaks, comparing to known compounds
with similar functional groups and/or the spectra obtained from the literature.
o Reporting peaks to the nearest integer cm-1, not 0.01 cm-1 from peak finding.
o Each IR spectrum should have your name(s) and chemical formula.
o As the synthesis proceeded, compare the similarities and changes in each step of the synthesis.
Sample Solution
