Which step is irrelevant concerning the balancing of redox equations by the oxidation number method?
Correct answer: A. Split the reaction into two half reactions.
- A. Split the reaction into two half reactions.
- B. Assign an oxidation number to all the atoms involved in the equation.
- C. Identify the element changing oxidation number
- D. Equalize the number of electrons lost and gained
Explanation
Option A is correct. That step belongs to the ion-electron (half-reaction) method, not the oxidation number method.In the oxidation number method, you:Assign oxidation numbers.Identify atoms changing oxidation state.Equalize the total increase and decrease in oxidation number.Balance the remaining atoms and charges.So, splitting into half-reactions is not required here.
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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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