Electrochemical cell is a device which converts chemical energy into electrical energy in a/an _____.

Correct Answer: indirect redox reaction

An electrochemical cell (specifically a galvanic or voltaic cell) is a device that converts chemical energy liberated during a spontaneous chemical reaction into electrical energy.

In a direct redox reaction, oxidation and reduction take place in the same vessel or container, causing the chemical energy released during the reaction to be lost as heat rather than being converted into electrical energy.

In contrast, an electrochemical cell operates via an indirect redox reaction. In this setup, oxidation and reduction occur in two separate half-cells (containers). The transfer of electrons from the reducing agent to the oxidizing agent takes place indirectly through an external conducting wire connecting the two electrodes. This flow of electrons through the external circuit generates electrical energy.

Therefore, an electrochemical cell converts chemical energy into electrical energy in an indirect redox reaction.