Question

Assertion (A): Copper ions migrate from the anode to the cathode during electrorefining of copper.

Reason (R): In the electrorefining process, metal ions accept electrons at the anode and are deposited as pure metal.

Answer these questions by selecting the appropriate option given below:

(a) Both A and R are true, and R is the correct explanation of A.

(b) Both A and R are true, but R is not the correct explanation of A.

(c) A is true but R is false.

(d) A is false but R is true.

Answer 1

Correct answer is (c) A is true but R is false.

Explanation:

Assertion (A) is true: Copper ions migrate from the anode to the cathode during electrorefining of copper. In electrorefining, an impure copper anode is placed in an electrolyte solution of copper sulfate and sulfuric acid. A pure copper cathode is placed on the opposite side of the cell.