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Cu + 2 Ag + → Cu 2+ + 2 Ag 2 Al + 3 Co 2+ → 2 Al 3+ + 3 Co 2 Cu + → Cu 2+ + Cu

Cu + 2 Ag + → Cu 2+ + 2 Ag 2 Al + 3 Co 2+ → 2 Al 3+ + 3 Co 2 Cu + → Cu 2+ + Cu 4) 5 Fe 2+ + MnO 4 – + 8 H + → 5 Fe 3+ + Mn 2+ + 4 H 2 8 Ni 2 + + IO 4 – + 8 H + → 8 Ni 3 + + I – + 4 H 2 O 6) 3 Cu + 2 NO 3 – + 8 H + → 3 Cu 2+ + 2 NO + 4 H 2 O

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Cu + 2 Ag + → Cu 2+ + 2 Ag 2 Al + 3 Co 2+ → 2 Al 3+ + 3 Co 2 Cu + → Cu 2+ + Cu

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  1. Cu + 2 Ag+ → Cu2++ 2 Ag • 2 Al + 3 Co2+ → 2 Al3+ + 3 Co • 2 Cu+ → Cu2+ + Cu 4) 5 Fe2+ + MnO4– + 8 H+ → 5 Fe3+ + Mn2+ + 4 H2 • 8 Ni2+ + IO4–+ 8 H+ → 8 Ni3+ + I– + 4 H2O 6) 3 Cu + 2 NO3– + 8 H+ → 3 Cu2+ + 2 NO + 4 H2O • 2 Mn2+ + 5 BiO3–+ 14 H+ → 5 Bi3+ + 2 MnO4– + 7 H2O 8) 3 CN– + 2 MnO4– + H2O → 3 CNO– + 2 MnO2 + 2 OH–

  2. NO3– + 4 Zn + 7 OH– → NH3 + 4 ZnO22– + 2 H2O 10) Cr2O72– + 6 Cl– +14 H+ → 2 Cr3+ + 3 Cl2 + 7 H2O • 5 Sn2+ + 2 MnO4– + 16 H+ → 5 Sn4+ + 2 Mn2+ + 8 H2O • 4 Zn + NO3– + 6 H2O → NH3 + 4 Zn2+ + 9 OH– • O2 + 4 Br – + 4 H+ → 2 H2O + 2 Br2 14) 2 CrO42– + 3 SO32– + 10 H+ → 2 Cr3+ + 3 SO42– + 5 H2O 15) 2 Cr(OH)3 + 6 ClO– → 2 CrO42– + 3 Cl2 + 2 H2O + 2 OH– • P4 + 12 Cl– +12 H+ → 4 PH3 + 6 Cl2

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