Balancing Redox Reactions: Acidic Solutions Video Lessons

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Problem: Complete and balance the following half-reaction: O2(g) → H2O(l) (acidic 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.Complete and balance the following half-reaction: O2(g) → H2O(l) (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

We are asked to complete the following half-reaction:

O2(g) → H2O(l) (acidic solution and basic solution)


Step 1: Balance oxygen by adding H2O(l) to the side that needs oxygen (1 O: 1 H2O)


O2(g) → H2O(l) + H2O(l)                                                                                     


Step 2: Balance hydrogen by adding H+ to the side that needs hydrogen (1 H: 1 H+)


4H+(aq) + O2(g) → 2 H2O(l)           

                                                                  

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Problem Details

Complete and balance the following half-reaction: 

O2(g) → H2O(l) (acidic 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.

Complete and balance the following half-reaction: 

O2(g) → H2O(l) (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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Based on our data, we think this problem is relevant for Professor Surendranath's class at MIT.