Question

The cell voltage of a galvanic cell becomes zero after using for some time because

• A. All the free electrons are used up
• B. Oxidation potentials of the two half cells become differen
• C. Reduction potentials of the two half cells become equa
• D. Oxidation potentials of two half cells become equal in magnitude but opposite in sign

Answer 1

Answer: (C)

Since $E_{red} \propto [M^{n+}]$
$\therefore $ When current is drawn the cone, of electrolytic solution changes and hence the reduction potential.