Preparation of Ammine Complexes of Cobalt(III)
1) Give at least two differences between the two preparationsthat are carried out in this lab.
2) Base on the structures of complex ions shown in this lab,draw a pictures od what you think the complex ion [Fe(NH3)6]+2would look like.
3) Suggest another small molecule that, like water and ammonia,might make a good ligand. Remember that ligands are electron pairdonors, which means that one atom must have a lone pair ofelectrons on it. Draw the Lewis dot structure of the molecule youthink would make a good ligand.
4) How would your percent yield be affected if you didn't dryyour product completely? Explain your answer.
5) Why do you think both reaction mixtures were cooled beforethe products were collected by filtration?
6) What was the purpose of the hydrogen peroxide used in thislab?
7) What might have happened if the temperature of the oven wereset to 210 Celsius instead of 110 Celsius called for in theprocedure?
