Problem: 2ClO2(g) + 2I-(aq) → 2ClO-(aq) + I2(s)Part A Indicate the half-reaction occurring at Anode.Express your answer as a chemical equation. Identify all of the phases in your answerPart BIndicate the half-reaction occurring at Cathode.Express your answer as a chemical equation. Identify all of the phases in your answer.

FREE Expert Solution

Recall the mnemonics LEO GER.

Lose               Gain

Electron         Electrons

Oxidation       Reduction


 Oxidation half-reactionlost electrons (electrons are on the product side)   anode
 Reduction half-reactiongained electrons (electrons are on the reactant side) → cathode


Oxidation states:

  • neutral compounds or elements = 0
  • ions = charge of ion


Half reactions:

  • 2ClO2(g) → 2ClO(aq) 
    • O.S. of ClO= 0
    • O.S. of ClO- = -1 x 2 (coefficient) = -2 
      • Change in oxidation state: 0 → -2 
      • gained 2e- → reduction  cathode 
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Problem Details

2ClO2(g) + 2I-(aq) → 2ClO-(aq) + I2(s)

Part A 

Indicate the half-reaction occurring at Anode.

Express your answer as a chemical equation. Identify all of the phases in your answer

Part B

Indicate the half-reaction occurring at Cathode.

Express your answer as a chemical equation. Identify all of the phases in your answer.

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