Problem: Complete and balance the following half-reaction: H2SO3(aq) → SO2−4(aq) (acidic solution) Express your answer as a chemical equation. Identify all of the phases in your answer. 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:

H2SO3(aq) → SO2−4(aq) (acidic solution) 


Step 1: Balance the non-hydrogen and non-oxygen elements first


H2SO3(aq) → SO2−4(aq) 

(S: already balanced)


Step 2: Balance oxygen by adding H2O(l) to the side that needs oxygen (1 O: 1 H2O)


H2SO3(aq) → SO2−4(aq) + H2O(l)

                                                                                     


Step 3: Balance hydrogen by adding H+ to the side that needs hydrogen (1 H: 1 H+)


H2SO3(aq) → SO2−4(aq) + H2O(l)         

(H: already balanced)                                                                          

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Problem Details

Complete and balance the following half-reaction: 

H2SO3(aq) → SO2−4(aq) (acidic solution) 

Express your answer as a chemical equation. Identify all of the phases in your answer. 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: Acidic Solutions concept. You can view video lessons to learn Balancing Redox Reactions: Acidic Solutions. Or if you need more Balancing Redox Reactions: Acidic Solutions practice, you can also practice Balancing Redox Reactions: Acidic Solutions practice problems.