Which of the Following Reactions Is Considered an Oxidation-Reduction Reaction

question 25

Multiple Choice

Which of the following reactions is considered an oxidation-reduction reaction?
I. NH₃ (g) + HCl (g) →NH₄Cl
II. Zn (s) + CuSO₄ (aq) →Cu (s) + ZnSO₄ (aq)
III. 2 K (s) + Cl₂ (g) →2 KCl (s)

• A) I only
• B) II only
• C) III only
• D) I and II
• E) II and III

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