Which of the following reactions is an oxidation-reduction reaction? A) NH₄HS(s) → NH₃(g) + H₂S(g) B) 2 NaHCO₃(s) → Na₂CO₃(s) + H₂O(g) + CO₂(g) C) N₂O₄(g) → 2 NO₂(g) D) 2 SO₂(g) + O₂(g) → 2 SO₃(g) E) 2 CH₃COOH(aq) + Ba(OH)₂(aq) → Ba(CH₃COO)₂(aq) + 2 H₂O(l)

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Quizplus · Accepted Answer

This reaction involves the transfer of electrons between the reactants and is therefore an oxidation-reduction (redox) reaction. The sulfur atoms are being oxidized from a lower state (S2) to a higher state (S3) while the oxygen atom is being reduced from a higher state (-2) to a lower state (-1). The other reactions do not involve a transfer of electrons and are not redox reactions.

Which of the Following Reactions Is an Oxidation-Reduction Reaction