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Worksheet #1 Writing half reactions 1. Define each: Remember “Oil Rig”: Oxidation is loss (of e—)reduction is gain (of e—) a) Oxidation b) Reduction c) Oxidizing agent d) Reducing agent 2. Write half reactions for each of the following atoms or ions. Label each as oxidation or reduction. Use the Activity Series Chart. a) Al b) Ba2+ c) Br 2
5. Identify the material being reduced, the material being oxidized, the reducing agent, and the oxidizing agent in each of the following redox reactions. Try to write the half-cell reactions. a) 2 Na(s) + ½ O2(g) Na 2O(s) reduction = ½ O2(g) + 2e − O2− O 2 = reduced; OA oxidation = Na(s) Na +(aq) + e − Na = oxidized; RA
Worksheet # 4 Balancing Redox Reactions Balance each of the following half-cell reactions. (In each case assume that the reaction takes place in an ACIDIC solution.) Also, state whether the reaction is oxidation or reduction. 1. S 2 O 3 2- → SO 4 2-2. MnO 4 - → Mn2+ 3. As → AsO 4 3-4. Cr3+ → Cr 2 O 7 2-5. Pb2+ → PbO 2
Write half reactions for each of the following atoms or ions. Label each as oxidation or reduction. Use the Activity Series Chart. Balance the spontaneous redox reaction below.
17 Απρ 2013 · When presented with a REDOX reaction in this class, we will use the “half-reactions” method to balance the reaction. Let’s take a look at a simple reaction WITHOUT HYDROGEN OR. First, is this even a REDOX reaction? Is there a species that is being reduced and a species that is being oxidized? We must assign oxidation numbers.
Write half reactions for each of the following atoms or ions. Label each as oxidation or reduction. 5. 6. 7. 8. 9. 10. 11. 12. Ca. 14. 15. H2. 16. H+. 17. F- 18. P3- Balance each spontaneous redox equation. Identify the entities reduced and oxidized. State the reducing agent and the oxidizing agent. 19. Al . 20. F2. 21. O2 . 22.
28 Ιουν 2010 · For each reaction in problem 13, identify the oxidizing agent and reducing agent. 15. Write half-reactions for the oxidation and reduction process for each of the following.
