Question

An electrochemical cell is made by connecting Nickel and Chromium electrodes. With the help of information given below, the correct value of standard cell potential, would be:
$Ni^{2+} + 2e^- \rightarrow Ni(s)$ $E^0$ = – 0.25V
$Cr^{3+} + 3e^- \rightarrow Cr(s)$ $E^0$ = – 0.74V

• A. -0.49 V
• B. -0.49 V
• C. -0.99 V
• D. -0.99 V

Answer 1

Answer: (A)

-0.49 V

Answer 2

The correct option is (A): -0.49 V