Which of the following is a balanced redox equation?
Correct answer: C. 3Na + Fe3+ -> 3Na+ + Fe
- A. Na + Fe 3+ -> Na + + Fe
- B. Zn + Ag + -> Zn 2+ + Ag
- C. 3Na + Fe3+ -> 3Na+ + Fe
- D. 2Zn + Ag+ -> 2Zn2+ + Ag
Explanation
To check if the redox reaction equation is balanced, the number of atoms and charges should be balanced on both sides of the equation. Only option C has an equal charge (of +3) on either side of the reaction equation and a balanced number of atoms. Option B has a balanced number of atoms but unequal charges. Option D also has a balanced number of atoms but unequal charges. Option A has a balanced number of atoms but unequal charges.
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About Electrochemistry
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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