Multiple Choice
Which of the following represents the oxidation half-reaction that occurs at the anode in a hydrogen fuel cell?
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6. Chemical Quantities & Aqueous Reactions
Redox Reactions
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In a redox reaction, what is the process called when an atom in a reactant gains electrons?
A
Neutralization
B
Oxidation
C
Precipitation
D
Reduction
Verified step by step guidance1
Understand the definitions of key terms in redox reactions: Oxidation is the loss of electrons, and Reduction is the gain of electrons by an atom or ion.
Identify that the problem asks for the process where an atom gains electrons, which directly corresponds to the definition of Reduction.
Recall that Neutralization refers to an acid-base reaction where an acid and a base react to form water and a salt, which is unrelated to electron transfer.
Recognize that Precipitation involves the formation of a solid from a solution during a chemical reaction, also unrelated to electron gain or loss.
Conclude that the correct term for an atom gaining electrons in a redox reaction is Reduction.
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