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Identify the anode

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Reference no: EM131906567

For the reaction given below, identify the anode and describe what happens to the electrode as the reaction continues.

3Fe(s) + Cr2O72-(aq) + 14 H+(aq) → 3Fe2+(aq) + 2 Cr+3(aq) + 7H2O(l)

  • Fe, converted to Fe2+; electrode gains mass.
  • Fe electrode at which Cr+3 is oxidized; electrode is unchanged.
  • Passive electrode at which Cr2O72-(aq) is oxidized; electrode is unchanged.
  • Fe electrode; no change.
  • Fe, converted to Fe2+; electrode decreases in size.

Reference no: EM131906567

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