Write balanced equation for the anode of the following galvanic cell Fe( s )|Fe2

Question

Write balanced equation for the anode of the following galvanic cell
Fe(s)|Fe2+(aq)||O2(g)|H+(aq),H2O(l)|Pt(s)

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

Write balanced equation for the cathode of the following galvanic cell
Fe(s)|Fe2+(aq)||O2(g)|H+(aq),H2O(l)|Pt(s)

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

Write balanced equation for overall cell reactions of the following galvanic cell
Fe(s)|Fe2+(aq)||O2(g)|H+(aq),H2O(l)|Pt(s)

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

Explanation / Answer

Balanced equation for anode:

Fe (s) -> Fe+2 (aq) + 2e-

Balanced Equation for cathode:

O2 (g)+ 4H+ (aq) + 4e- -> 2H2O (l)

Balanced equation for cell:

2 (Fe (s) -> Fe+2 (aq) + 2e-) = 2Fe (s) -> 2Fe+2 (aq) + 4e-

Adding up:

O2 (g)+ 4H+ (aq) + 2Fe (s) -> 2Fe+2 (aq) + 2H2O (l)

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