Which statement about reduction matches the chapter notes?
AReduction is loss of electrons and increase in oxidation number
BReduction is gain of electrons and decrease in oxidation number
CReduction is gain of protons only
DReduction is always the formation of an anion
Answer & Solution
Correct answer: B. Reduction is gain of electrons and decrease in oxidation number
The notes define reduction as gain of electrons or decrease in oxidation number. This is illustrated by $Cu^{2+} + 2e^- \rightarrow Cu$.
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