Chemistry Practice Problems Balancing Redox Reactions Practice Problems Solution: Complete and balance the following half-reactions....

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Solution: Complete and balance the following half-reactions. In each case indicate whether the half-reaction is an oxidation or a reduction.TiO2(s)  →  Ti2+(aq)   (acidic  solution)

Problem

Complete and balance the following half-reactions. In each case indicate whether the half-reaction is an oxidation or a reduction.

TiO2(s)  →  Ti2+(aq)   (acidic  solution)

Solution

We are being asked to balance the given half-reaction and indicate if it is and oxidation or reduction

When balancing redox reactions in acidic media use the following steps:


Step 1. Balance the non-hydrogen and non-oxygen elements first
Step 2. Balance oxygen by adding H2O to the side that needs oxygen (1 O: 1 H2O)
Step 3. Balance hydrogen by adding H+ to the side that needs hydrogen (1 H: 1 H+)
Step 4. Balance the charges: add electrons to the more positive side (or less negative side)

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