Question

In the process of electrorefining copper, as shown in the diagram below, which of the following statements is correct?

Options

• The anode is made of pure copper.

• The cathode is made of impure copper.

• Copper is deposited at the anode.

• Copper ions from the anode move to the cathode and get deposited as pure copper.

Answer 1

Copper ions from the anode move to the cathode and get deposited as pure copper.

Explanation:

At the anode, impure copper dissolves into the solution as Cu²⁺ ions. These Cu²⁺ ions migrate through the solution to the cathode, where they gain electrons and are deposited as pure copper.