How does the reaction quotient (Q) relate to the equilibrium constant (K) and cell potential (E) in an electrochemical cell?

• A. When Q = K, the cell potential (E) is zero.
• B. When Q < K, the cell potential (E) is negative.
• C. When Q > K, the cell potential (E) is positive.
• D. When Q = K, the cell potential (E) is maximum.

Answer: (A)