Multiple Choice
Classify the transformation of Fe^{3+} to Fe^{2+} as reduction, oxidation, or neither.
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6. Chemical Quantities & Aqueous Reactions
Redox Reactions
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Which statement best describes a redox reaction?
A
A precipitate forms when two aqueous ionic solutions are mixed.
B
Electrons are transferred between species, so oxidation and reduction occur simultaneously.
C
A reaction occurs in which is transferred from an acid to a base without changing oxidation numbers.
D
A compound breaks into simpler substances with no change in oxidation states.
Verified step by step guidance1
Understand that a redox (reduction-oxidation) reaction involves the transfer of electrons between chemical species.
Recognize that in a redox reaction, one species loses electrons (oxidation) and another species gains electrons (reduction), and these processes always occur simultaneously.
Note that the formation of a precipitate when two aqueous ionic solutions are mixed is a precipitation reaction, not necessarily a redox reaction.
Identify that the transfer of \( H^{+} \) ions from an acid to a base without changing oxidation numbers describes an acid-base reaction, not a redox reaction.
Understand that a compound breaking into simpler substances without changes in oxidation states is a decomposition reaction, not a redox reaction.
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