Worksheet # 5 Balancing Redox Reactions in Acid and Basic PDF

Jun 28 2010 Determine what is oxidized and what is reduced in each reaction. Identify the oxidizing agent and the reducing agent

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Balancing Redox Reactions Worksheet 1. Balance each redox reaction in acid solution. Mn. 2+. + BiO3. -. → MnO4. -. + Bi. 3+. MnO4. -. + S2O3 2- → S4O6 2- + Mn.

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Target Audience: AP Chemistry students (possibly Honors) Homework- Balancing redox reactions. If time allows students may begin to work on “Balancing redox ...

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Jun 28 2010 Determine what is oxidized and what is reduced in each reaction. Identify the oxidizing agent and the reducing agent

Worksheet # 5 Balancing Redox Reactions in Acid and Basic

WS #5 Balancing Redox Reactions in Acid and Basic Solution. Balance each redox equation. Assume all are spontaneous. Use the half reaction method. 1. 2O2-.

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Oxidation-reduction reactions are also known as redox reactions. • Def: Redox reactions describe all chemical reactions in which there is a net change in.

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and a redox reaction. (r) A solution of diamminesilver(I) chloride is treated with dilute nitric acid.

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Worksheet # 5 Balancing Redox Reactions in Acid and Basic Solution Balance each half reaction in basic solution. 4. Cr2O72 - → Cr3+ 5. NO → NO3- 6. SO42- → SO2 7. MnO2 → Mn2O3 Balance each redox reaction in acid solution using the half reaction method. 8. H2O2 + Cr2O72- → O2 + Cr3+ 9. TeO32- + N2O4 → Te + NO3- 10. ReO4- + IO- → IO3- + Re 11. PbO2 + I2 → Pb2+ + IO3- 12. As → H2AsO4- + AsH3

Balance each redox reaction in basic solution using the half reaction method. 13. O2 + Cr3+ → H2O2 + Cr2O72- 14. Te + NO3- → TeO32- + N2O4 15. IO3- + Re → ReO4- + IO- 16. Pb2+ + IO3- → PbO2 + I2 17. Cr2O72- + Hg → Hg2+ + Cr3+

State of the change that represents oxidation, reduction or neither. Use oxidation #s. Remember that if the oxidation # increases it means oxidation and when it decreases it mean reduction! 18. MnO2 → Mn2O3 19. NH3 → NO2 20. HClO4 → HCl + H2O 21. O2 → O2- 22. P2O5 → P4H10 Determine the oxidation number 23. H2SO4 22. HSO4- 24. P4 23. NaH 25. UO3 24. Na2O2 26. U2O5 25. PbSO4 Harder Balancing Questions - DISPROPORTIONATION 1. CuF2 + NH3 → Cu3N + NH4F + N2 2. Ca3(PO4)2 + SiO2 + C → P4 + CaSiO3 + CO

WS #5 Balancing Redox Reactions in Acid and Basic Solution Balance each redox equation. Assume all are spontaneous. Use the half reaction method. 1. 2O2- + 2F2 -----------> O2 + 4F- 2. 4Al + 3O2 -----------> 6O2- + 4Al3+ 3. 2K + Zn+2 -----------> Zn + 2K+ Balance each half reaction in basic solution. 4. Cr2O72- + 7H2O + 6e- --------------> 14OH- + 2Cr3+ 5. NO + 4OH- ------------------> 2H2O + NO3- + 3e- 6. 2H2O + 2e- + SO42- --------------> SO2 + 4OH- 7. 2MnO2 + H2O + 2e- --------------> Mn2O3 + 2OH- Balance each redox reaction in acid solution using the half reaction method. 8. 8H+ + 3H2O2 + Cr2O72- -------> 3O2 + 2Cr3+ + 7H2O 9. TeO32 - + 2N2O4 + H2O -------> Te + 4NO3- + 2H+ 10. 4H+ + 4ReO4- + 7IO- -------> 7IO3- + 4Re + 2H2O 11. 8H+ + 5PbO2 + I2 -------> 5Pb2+ + 2IO3- + 4H2O

12. 12H2O + 8As -------> 3H2AsO4- + 5AsH3 + 3H+ Balance each redox reaction in basic solution using the half reaction method. 13. 3O2 + 8OH- + 2Cr3+ -------> H2O + 3H2O2 + Cr2O72- 14. H2O + Te + 4NO3- -------> TeO32- + 2OH- + 2N2O4 15. 7IO3- + 4OH- + 4Re -------> 4ReO4- + 7IO- + 2H2O 16. 8OH- + 5Pb2+ + 2IO3- -------> 5PbO2 + I2 + 4H2O 17. 7H2O + Cr2O72- + 3Hg -------> 3Hg2+ + 14OH- + 2Cr3+ State of the change represents oxidation, reduction or neither (use oxidation #s). 18. MnO2 --------> Mn2O3 reduction 19. NH3 --------> NO2 oxidation 20. HClO4 -------> HCl + H2O reduction 21. O2 --------> O2- reduction 22. P2O5 --------> P4H10 reduction Determine the oxidation number 23. H2SO4 6 22. HSO4- 6 24. P4 0 23. NaH -1

25. UO3 6 24. Na2O2 -1 26. U2O5 5 25. PbSO4 2 Harder Balancing Questions - DISPROPORTIONATION 1. CuF2 + NH3 → Cu3N + NH4F + N2 2. Ca3(PO4)2 + SiO2 + C → P4 + CaSiO3 + CO 20e + 20H+ + 6SiO2 + Ca3(PO4)2 → 6CaSiO3 + P4 + 10H2O 10 ( H2O + C → CO + H+ + 2e)___________________ 2Ca3(PO4)2 + 6SiO2 + 10C → P4 + 6CaSiO3 + 10 CO

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[PDF] Worksheet # 5 Balancing Redox Reactions in Acid and Basic