Problem: A beaker contains an aqueous solution of Ag + ions and Cu2+ ions. Two short pieces of silver wire and copper wire are added to the beaker - they are not touching each other or anything else except for the solution. Which of the following statements is true?A. Copper ions are reduced on the silver wire.B. Silver ions are reduced on the copper wire.C. Both silver ions and copper ions are reduced by water.D. Silver ions are reduced on the silver wire.E. Copper ions are reduced on the copper wire.F. The silver and copper wires are oxidized by water.

FREE Expert Solution

We’re being asked to determine the species reduced or oxidized in an aqueous solution of Ag + ions and Cu2+ ions when two short pieces of silver wire and copper wire are added to the beaker.


Recall that the cathode is where reduction occurs while the anode is where oxidation occurs.

• ↓ E° → oxidation → anode

Loss Electrons → Oxidation

• ↑ E° → reduction → cathode

Gain Electrons → Reduction


Reduction potentials of Ag+ and Cu2+ can be found in books or online:

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Problem Details

A beaker contains an aqueous solution of Ag + ions and Cu2+ ions. Two short pieces of silver wire and copper wire are added to the beaker - they are not touching each other or anything else except for the solution. Which of the following statements is true?

A. Copper ions are reduced on the silver wire.

B. Silver ions are reduced on the copper wire.

C. Both silver ions and copper ions are reduced by water.

D. Silver ions are reduced on the silver wire.

E. Copper ions are reduced on the copper wire.

F. The silver and copper wires are oxidized by water.

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