Which of the Following Is an Oxidation- Reduction Reaction

question 73

Multiple Choice

Which of the following is an oxidation- reduction reaction?

• A) Cu (s) + 2AgNO₃ (aq) - 2Ag (s) + Cu(NO₃)₂ (aq)
• B) Ba(C₂H₃O₂)₂ (aq) + Na₂SO₄ (aq) - BaSO₄ (s) + 2NaC₂H₃O₂ (aq)
• C) HCl (aq) + NaOH (aq) -H₂O (l) + NaCl (aq)
• D) AgNO₃ (aq) + HCl (aq) - AgCl (s) + HNO₃ (aq)
• E) H₂CO₃ (aq) + Ca(NO₃)₂ (aq) - 2HNO₃ (aq) + CaCO₃ (s)

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