CHEM 121 Lab Mal Rvined 05/3017 Chemical Reactions Name Instructor Section Partn

Question

CHEM 121 Lab Mal Rvined 05/3017 Chemical Reactions Name Instructor Section Partner n the spaces below, write detailed observations in complete sentences and answer all questions. (observations and equations: 3 pts. each; blanks: 2 pts. each) ure A: Reaction of iron and aluminum with aqueous copper(II) chloride Observations from the reaction of iron with aqueous copper(Il) chloride Observations from the reaction of aluminum with aqueous copper(II) chloride Is it possible that rust (Fe:Os) could be a product of both reactions? Explain. Compare the resulting solutions with the appearance of the provided solutions of copper(II) chloride, aluminum chloride, and iron(III) chloride. Write a balanced chemical equation for each of the reactions. Be sure to include the physical states of each compound. Reaction la (iron): Reaction 1b (aluminum): What aqueous product was formed in the reaction with iron? What aqueous product was formed in the reaction with aluminum? What solid was formed in both reactions? 43

Explanation / Answer

Reaction 1a, Copper (II) chloride is CuCl2, iron is Fe so the reaction is

2 Fe (s) + 3 CuCl2 ==== 2 FeCl3 + 3 Cu (s)

Reaction 1b.   CuCl2 and aluminum

3 CuCl2 +2 Al ==== 2 AlCl3 + 3 Cu (s)

aqueous product in the reaction with Fe is FeCl3

aqueous product in the reaction with Al is AlCl3

the solid formed in both reactions is Cu

There might be some rust in the reaction between Fe and CuCl2, this is because the Fe might react with some oxygen coming from air.

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