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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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