Balancing Redox Reactions Video Lessons

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Problem: Complete and balance the following half-reaction: Mn2+(aq) → MnO2(s) (basic solution) Express your answer as a chemical equation. Identify all of the phases in your answer. Indicate whether the half-reaction above is an oxidation or a reduction.

FREE Expert Solution

Step 1

Mn2+ (aq)  MnO2 (s)


Step 2

Mn2+ (aq)  MnO2 (s)


Step 3

Mn2+ (aq) + 2 H2O (l)  MnO2 (s)


Step 4

Mn2+ (aq) + 2 H2O (l)  MnO2 (s) + 4 H+ (aq)


Step 4

Mn2+ (aq) + 2 H2O (l) + 4 OH- (aq)  MnO2 (s) + 4 H+ (aq) + 4 OH- (aq)


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Problem Details

Complete and balance the following half-reaction: 

Mn2+(aq) → MnO2(s) (basic solution) 

Express your answer as a chemical equation. Identify all of the phases in your answer. Indicate whether the half-reaction above is an oxidation or a reduction.

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Balancing Redox Reactions concept. You can view video lessons to learn Balancing Redox Reactions. Or if you need more Balancing Redox Reactions practice, you can also practice Balancing Redox Reactions practice problems.

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Based on our data, we think this problem is relevant for Professor Hopkins' class at LSU.