JEE Main · 2024 · 06 Apr 2024 · Shift 2 · Redox Reactions and Electrochemistry

How can an electrochemical cell be converted into an electrolytic cell ?

(A)Applying an external opposite potential greater than $E_{cell}^{0}$ ✓ Correct
(B)Reversing the flow of ions in salt bridge.
(C)Applying an external opposite potential lower than $E_{cell}^{0}$ .
(D)Exchanging the electrodes at anode and cathode.

Answer: (A)

Solution

A galvanic (electrochemical) cell can be driven in reverse — made to behave as an electrolytic cell — only by applying an external potential difference, opposing the cell's own EMF, that exceeds

E_{ce l l}^{0}

JEE Main · 2024 · 06 Apr 2024 · Shift 2 · Single correct option

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