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Chapter 18: Problem 1

In an electrochemical cell, (a) potential energy decreases (b) kinetic energy decreases (c) potential energy changes into electrical energy (d) chemical energy changes into electrical energy.

Short Answer

Expert verified
The answer to the question is (d) chemical energy changes into electrical energy.

Step by step solution

01

Defining the Electrochemical Cell

An electrochemical cell is a type of cell that converts chemical energy to electrical energy or vice versa through a chemical reaction, specifically a redox reaction.
02

Analyzing the options

Option (a) and (b) talks about decreasing potential and kinetic energy respectively, it doesn't highlight a conversion between two energy types. Therefore, they don’t accurately describe the functioning of an electrochemical cell.
03

Evaluating the Correct Energy Conversion

Option (c) proposes that potential energy changes into electrical energy, which can be correct in a situation of a battery being used (discharged). However, Option (d) proposes that chemical energy changes into electrical energy, which is exactly the functioning of an electrochemical cell, where a chemical reaction (redox reaction) produces an electrical current.

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Most popular questions from this chapter

For a cell reaction involving \(2 e^{-}\) change, the standard emf of the cell is found to be \(0.295\) \(\mathrm{V}\) at \(25^{\circ} \mathrm{C}\). The equilibrium constant of the reaction will be (a) \(2.95 \times 10^{2}\) (b) 10 (c) \(1 \times 10^{10}\) (d) \(1 \times 10^{-10}\)

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