Which of the following reactions is an oxidation-reduction reaction? A)NH₃(g)+ H₂O(l)→ NH₄OH(aq) B)HCl(aq)+ NaH₂PO₄(aq)→ H₃PO₄(aq)+ NaCl(aq) C)2 H₂O(l)→ H₃O⁺(aq)+ OH^-(aq) D)Mg(OH)₂(s)→ Mg²⁺(aq)+ 2 OH^-(aq) E)CO(g)+ H₂O(g)→ CO₂(g)+ H₂(g)

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In reaction E, carbon monoxide (CO) is oxidized to carbon dioxide (CO2), and water (H2O) is reduced to hydrogen gas (H2), indicating a redox process.

Which of the Following Reactions Is an Oxidation-Reduction Reaction