9.3 Predicting Redox Reactions.pptx - Predicting Redox Reactions Chapter 9.3 Mg Mg Some redox reactions are spontaneous Mg2 Mg2 Pb Pb Other redox

9.3 Predicting Redox Reactions.pptx - Predicting Redox...

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Predicting Redox Reactions Chapter 9.3
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Some redox reactions are spontaneous Other redox reactions are not spontaneous Mg Mg 2+ Mg 2+ Mg Pb Pb Mg 2+ Mg 2+ Mg 2+ Mg 2+ Mg 2+ Mg 2+
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Experiments can be run… …and the results can be summarized in tables like the one below
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Redox table (standard reduction potentials table): A table listing standard reduction potentials of common oxidizing agents and reducing agents in order from strongest to weakest p.729-730 of your textbook
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The Spontaneity Rule
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Example Use the redox table to predict whether the following reactions will be spontaneous: a) Cr (s) + NiSO 4 (aq) ? b) Ag (s) + Pb(NO 3 ) 2 (aq) ?
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Predicting Redox Reactions Using a Redox Table 1. List all of the entities present 2. Classify the entities as either oxidixing agents (left side of the table) or reducing agents (right side of the table)
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Unformatted text preview: 3. Identify the strongest oxidizing agent (top left) and the strongest reducing agent (bottom right) 4. Predict whether the reaction is spontaneous 5. Write the half-reaction equations (reverse the direction of the oxidation reaction) 6. Use multipliers to balance the electrons 7. Combine the half reactions to give the overall equation Example • A strip of tin is placed in a solution of silver nitrate Practice • Iodic acid is poured into an aluminum pop can Practice • Tin (II) bromide solution is poured into acidified sodium dichromate solution HOMEWORK Required Reading: p. 618-623 (remember to supplement your notes!) Questions: p. 622 #1-4 p. 623 #1-9...
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  • Fall '13
  • Longsworth
  • Redox, Oxidizing agent

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