Number of electrons added on both sides of oxidation and reduction half reactions are balanced _.
Correct answer: D. Before adding two half reactions
- A. At the start of procedure
- B. Somewhere in the middle of balancing
- C. After adding two half reactions
- D. Before adding two half reactions
Explanation
A redox equation can be balanced using the following stepwise procedure: (1) Divide the equation into two half-reactions. (2) Balance each half-reaction for mass and charge. (3) Equalize the number of electrons transferred in each half-reaction. (4) Add the half-reactions together.once added they are eliminated.
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About Balancing Redox Equations
Redox equations are balanced by tracking electron loss and gain through oxidation numbers or the ion-electron method. Work includes identifying oxidizing and reducing agents, balancing atoms and charge in acidic or basic medium, and ensuring that electrons lost equal electrons gained.
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