Which One of the Following Is a Redox Reaction

question 12

Multiple Choice

Which one of the following is a redox reaction?

• A)2Na( g)+ Cl ₂( g)→ 2NaCl( s)
• B)Ba ²⁺( aq)+ SO ₄ ²⁻( aq)→ BaSO ₄( s)
• C)K ₂Cr ₂O ₇( aq)+ 2KOH( aq)→ 2K ₂CrO ₄( aq)+ H ₂O( l)
• D)Na ₂CO ₃( s)+ 2HCl( aq)→ 2NaCl( aq)+ CO ₂( g)+ H ₂O( l)
• E)H ₂O( l)→ H ⁺( aq)+ OH ⁻( aq)

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