The number of electrons added on both sides of the oxidation and reduction half-reactions are balanced _.
Correct answer: D. Before adding the two half reactions
- A. At the start of procedure
- B. Somewhere in the middle of balancing
- C. After adding the two half reactions
- D. Before adding the two half reactions
Explanation
The electrons are balanced after you have added the two half-reactions together to form the balanced overall redox reaction. Balancing the half-reactions independently is a common approach, and after adding them together, the number of electrons on both sides will be equal.
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Electrochemistry describes electron transfer through oxidation and reduction, identifies oxidizing and reducing agents, and applies oxidation numbers to balance redox equations. It also covers electrode potential and the standard hydrogen electrode, which provides the reference for comparing the reduction tendencies of other electrodes.
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