Ch400Ch4LN3 - Chem 400 Chapter 4 Lecture Notes Part 3...

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Chem 400 Chapter 4 Lecture Notes Part 3 Oxidation-Reduction Rxns or Redox Rxns Oxidation-Reduction Rxns are rxns where electrons are transferred between the reactants. • Since electrons are electrical energy, this transfer of electrical energy is the driving force. • Many common rxns are examples of redox rxns including combustion rxns, oxidation rxns, and single displacement rxns. CH 4 (g) + O 2 (g) CO 2 (g) + H 2 O(g) AgNO 3 (aq) + Na(s) Ag(s) + NaNO 3 (aq) HNO 3 (aq) + Na(s) H 2 (g) + NaNO 3 (aq) • What do all of these rxns have in common? • Electrons are transferred, with one reactant losing electrons, while another reactant gains electrons. • As the first redox rxns to be studied extensively were oxidation rxns with oxygen gas, it explains why the term oxidation is used. • When many elements or compounds were reacted with oxygen gas, they transferred electrons to the oxygen atoms, so they were oxidized . Vocabulary Oxidation : the process of losing electrons. The compound or element which loses electrons is oxidized . The compound or element which is oxidized is the reducing agent or the reductant , as it gives electrons to the other reactant. Reduction
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Ch400Ch4LN3 - Chem 400 Chapter 4 Lecture Notes Part 3...

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