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Unit Fourteen: Redox Reactions

Unit Fourteen: Redox Reactions. Day Three. Balancing Redox Reactions. Balancing Redox Reactions. Al (s) + Ag + ( aq ) → Al 3+ ( aq ) + Ag (s ) Assign oxidation n umbers. What is being oxidized: What is being reduced: What is the oxidizing agent: What is the reducing agent:. Al.

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Unit Fourteen: Redox Reactions

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  1. Unit Fourteen: Redox Reactions Day Three

  2. Balancing Redox Reactions

  3. Balancing Redox Reactions Al(s) + Ag+(aq)→ Al3+(aq) + Ag(s) • Assign oxidation numbers. • What is being oxidized: • What is being reduced: • What is the oxidizing agent: • What is the reducing agent:

  4. Al + 3e- • If __________is being oxidized, the oxidation half reaction is: Al(s)→ Al3+(aq) • If __________ is being reduced, the reduction half reaction is: Ag+(aq) → Ag(s) 3e- + 3Ag+(aq) → 3Ag(s) • Then we add… 3e- + 3Ag+(aq) → 3Ag(s) + Al(aq) → Al3+(s) + 3e- Al(s) + 3Ag+(aq) → Al3+(aq) + 3Ag(s) Ag+ 1e- + x3

  5. Practice Problems • Zn(s) + Cu2+(aq) → Zn2+(aq) + Cu(s) • Al(s) + Cu2+(aq) → Al3+(aq) + Cu(s) • HCl(aq) + K2Cr2O7(aq) → KCl(aq) + CrCl3(aq) + H2O(l) + Cl2(g) • MnO4-(aq) + SO32-(aq) + H+(aq) → Mn2+(aq) + SO42-(aq) + H2O(l)

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