Balance the following redox reaction if it occurs in acidic solution. what are the coefficients in front of h+ and fe3+ in the balanced reaction? fe2+(aq) + mno4-(aq) → fe3+(aq) + mn2+(aq) balance the following redox reaction if it occurs in acidic solution. what are the coefficients in front of h+ and fe3+ in the balanced reaction? fe2+(aq) + mno4-(aq) → fe3+(aq) + mn2+(aq) h+ = 8, fe3+ = 1 h+ = 8, fe3+ = 5 h+ = 2, fe3+ = 3 h+ = 3, fe3+ = 2 h+ = 5, fe3+ = 1

H⁺ = 8; Fe³⁺ = 5

Explanation:

In order to balance a redox reaction, we use the ion-electron method.

Step 1: Identify both half-reactions.

Reduction: MnO₄⁻(aq) → Mn²⁺(aq)

Oxidation: Fe²⁺(aq) → Fe³⁺(aq)

Step 2: Balance the masses using H⁺ and H₂O where appropiate.

8 H⁺(aq) + MnO₄⁻(aq) → Mn²⁺(aq) + 4 H₂O(l)

Fe²⁺(aq) → Fe³⁺(aq)

Step 3: Balance the charges adding electrons where appropiate.

8 H⁺(aq) + MnO₄⁻(aq) + 5 e⁻ → Mn²⁺(aq) + 4 H₂O(l)

Fe²⁺(aq) → Fe³⁺(aq) + 1 e⁻

Step 4: Multiply both half-reactions by numbers that assure that the number of electrons gained is equal to the number of electrons lost.

1 × [8 H⁺(aq) + MnO₄⁻(aq) + 5 e⁻ → Mn²⁺(aq) + 4 H₂O(l)]

5 × [Fe²⁺(aq) → Fe³⁺(aq) + 1 e⁻]

Step 5: Add both half-reactions

8 H⁺(aq) + MnO₄⁻(aq) + 5 e⁻ + 5 Fe²⁺(aq) → Mn²⁺(aq) + 4 H₂O(l) + 5 Fe³⁺(aq) + 5 e⁻

8 H⁺(aq) + MnO₄⁻(aq) + 5 Fe²⁺(aq) → Mn²⁺(aq) + 4 H₂O(l) + 5 Fe³⁺(aq)

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