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CLEP Chemistry Practice Test

Category - Chemistry

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A chemical reaction is shown below:

Zn(s) + 2H+(aq) → Zn2+(aq) + H2(g)

Which of the following statements best explains why this chemical reaction is an oxidation-reduction reaction?
  1. Zn reacts under basic conditions.
  2. Zn dissolves in an aqueous solution.
  3. Zn and H+ undergo a change of state.
  4. Zn loses electrons and H+ gains electrons.
Explanation
Answer: D - Zn loses electrons and H+ gains electrons.
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