Which Is Not a Characteristic Reaction of Chromium Metal or Chromium(II)ion

question 18

Multiple Choice

Which is not a characteristic reaction of chromium metal or chromium(II) ion?

• A)Cr(s)+ 2 H⁺(aq)→ Cr²⁺(aq)+ H₂(g)
• B)4 Cr²⁺(aq)+ O₂(g)+ 4 H⁺(aq)→ 4 Cr³⁺(aq)+ 2 H₂O(l)
• C)Cr(OH)₂(s)+ 2 H₃O⁺(aq)→ Cr²⁺(aq)+ 4 H₂O(l)
• D)Cr(OH)₂(s)+ OH^-(aq)→ Cr(OH)₃^-(aq)

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