Multiple Choice
In redox reactions, what is the process called when a substance loses electrons and gains oxygen?
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6. Chemical Quantities & Aqueous Reactions
Redox Reactions
Multiple Choice
Which of the following half-reactions correctly describes an oxidation process?
A
Ag^{+} + e^{-} ightarrow Ag
B
Cl_{2} + 2e^{-} ightarrow 2Cl^{-}
C
Cu^{2+} + 2e^{-} ightarrow Cu
D
Fe^{2+} ightarrow Fe^{3+} + e^{-}
Verified step by step guidance1
Recall that oxidation is the process where a species loses electrons, and reduction is the process where a species gains electrons.
Examine each half-reaction to identify whether electrons are on the reactant side (indicating reduction) or on the product side (indicating oxidation).
For the half-reaction \(Ag^{+} + e^{-} \rightarrow Ag\), electrons are gained, so this is a reduction process.
For the half-reaction \(Cl_{2} + 2e^{-} \rightarrow 2Cl^{-}\), electrons are gained, so this is also a reduction process.
For the half-reaction \(Fe^{2+} \rightarrow Fe^{3+} + e^{-}\), electrons are lost (on the product side), indicating this is an oxidation process.
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