The purpose of this experiment is to prepare tetraamminecopper (II) sulfate monohydrate by making a reaction between ammonia and copper (II) sulfate pentahydrate in an aqueous solution. When the reaction is complete, the product is then isolated and percent yield is determined. We had to weigh CuSO4 5H2O and then mix it with water then heat. Ammonia is then added once the solid dissolves and is heated to a gentle boil. The solution is then put into a buchner funnel and drained of all liquid with a water aspriator. The solid remaining is cleaned off with ammonia and ethanol solution and then just pure ethanol. The solid remaining is weighed. 1. What did you expect to happen and what actually happened? Why did it
2. What is your interpretation of the physical and chemical changes observed
during the experiment?
3. What type of chemical reaction was performed? Is there any physical evidence
that the reaction happened?
4. How did you know the reaction was over?
5. Considering the collected data, identify the type of problem that youâre working
with (simple stoichiometry, limiting reactant and/or percent yield) and describe
the steps needed to solve it. Integrate your calculations to show how identifying
the problem guides your solution.
6. Were you able to identify the limiting reagent?
7. What is the meaning of the % yield obtained? Could it be better?
8. What is your interpretation of the chemical equation (think about mole
9. Will the opposite reaction take place (water replacing ammonia ligands)?
10. Explain (Consider the properties of the chemicals involved and the nature of the
observed chemical reaction)
11. Could this reaction be performed in the solid phase? Why solutions are needed?
12. How could you improve the results?
13. Any other topics you consider important to this experiment.
The purpose of this experiment is to prepare tetraamminecopper (II) sulfate monohydrate by making a reaction between ammonia and copper (II) sulfate pentahydrate in an aqueous solution. When the reaction is complete, the product is then isolated and percent yield is determined. We had to weigh CuSO4 5H2O and then mix it with water then heat. Ammonia is then added once the solid dissolves and is heated to a gentle boil. The solution is then put into a buchner funnel and drained of all liquid with a water aspriator. The solid remaining is cleaned off with ammonia and ethanol solution and then just pure ethanol. The solid remaining is weighed. 1. What did you expect to happen and what actually happened? Why did it
2. What is your interpretation of the physical and chemical changes observed
during the experiment?
3. What type of chemical reaction was performed? Is there any physical evidence
that the reaction happened?
4. How did you know the reaction was over?
5. Considering the collected data, identify the type of problem that youâre working
with (simple stoichiometry, limiting reactant and/or percent yield) and describe
the steps needed to solve it. Integrate your calculations to show how identifying
the problem guides your solution.
6. Were you able to identify the limiting reagent?
7. What is the meaning of the % yield obtained? Could it be better?
8. What is your interpretation of the chemical equation (think about mole
9. Will the opposite reaction take place (water replacing ammonia ligands)?
10. Explain (Consider the properties of the chemicals involved and the nature of the
observed chemical reaction)
11. Could this reaction be performed in the solid phase? Why solutions are needed?
12. How could you improve the results?
13. Any other topics you consider important to this experiment.
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