Write the half-reaction that occurs at a hydrogen electrode in acidic aqueous solution when it serves as the anode of a voltaic cell. express your answer as an ionic half-reaction. identify all of the phases in your answer.

Question

Ciara Ingram

Chemistry

7 July, 09:35

Write the half-reaction that occurs at a hydrogen electrode in acidic aqueous solution when it serves as the anode of a voltaic cell. express your answer as an ionic half-reaction. identify all of the phases in your answer.

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Answers (1)

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Cheyenne Chung · Answer 1

The half cell reaction when it used as an anode

H₂ (g) → 2 H⁺ + 2 e⁻

Explanation:

Standard hydrogen electrode used as reference electrode & acts as an cathode as well as anode half cell.

The half cell reaction when it used as an anode

H₂ (g) → 2 H⁺ + 2 e⁻

(Pressure should be 1 bar, temperature 273 k and concentration of HCl = 1 Molar)

Cell representation

H₂ (g), H⁺ (1 M)

The standard electrode potential i. e oxidation as well as reduction = 0.00 V