A voltaic cell is constructed by immersing a strip of copper metal in 1.0 M CuSO

Question

A voltaic cell is constructed by immersing a strip of copper metal in 1.0 M CuSO4 solution and a strip of aluminum metal in 0.50 M Al2(SO4)3 solution. A wire and a salt bridge complete the circuit. The aluminum strip loses mass and [Al3+] in the solution increases. The copper electrode gains mass, and [Cu2+] in the solution decreases. Which of the following are correct regarding the copper electrode?

1. it is the anode

2. Cu---Cu2+ + 2e-

3. It is the negative electrode

4. It is the cathode

5. it is the positive electrode

6.Cu2+ +2e(-)---Cu

Explanation / Answer

1,3,and 6

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