Horvath Practice Problems 111

Horvath Practice Problems 111 - f rst is simply balancing...

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Here we can clearly see that the oxidation number of the copper is reduced from 2+ to 0 whereas the oxidation number for zinc is increased from 0 to 2+. For this reaction two electrons are transferred from each zinc atom to each copper ion to create the zinc ion and the copper neutral atom. Zinc is oxidized and copper is reduced. Zinc acts as a reducing agent and copper acts as an oxidizing agent Balancing redox reactions It is important for you to become pro fi cient at balancing redox reactions. This requires practice. There are three cases one needs to consider. The
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Unformatted text preview: f rst is simply balancing redox reactions like the zinc—copper example above. The second is balancing redox reactions in acids and the third is balancing redox reactions in bases ∗∗∗ See Koltz & Treichel Section 20.1, Examples 1,2 and 3 ∗∗∗ Group Work 1. Work on handout. Homework Reading : Kotz and Treichel, 20.1 Problems : Chapter 20: 1, 2, 3, 4, 5, 6 *Note* these are due after the next lecture. 110 OXIDATION—REDUCTION REACTIONS I...
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