Balance the equation in basic conditions. Phases are optional. equation: N_{2}H_{4} + Cu(OH)_{2} -> N_{2} + Cu

Answer 1

N₂H₄ + Cu(OH)₂ ==> N₂ + Cu

Half reactions:

N₂H₄ ==> N₂ .. unbalanced oxidation half reaction

N₂H₄ + 4OH^- ==> N₂ + 4H₂O + 4e- .. balanced oxidation reaction

Cu²⁺ +2e- ==> Cu .. balanced reduction reaction

Balance electrons by multiplying reduction reaction by 2, and add the two reactions:

N₂H₄ + 4OH^- ==> N₂ + 4H₂O + 4e-

2Cu²⁺ +4e- ==> 2Cu

--------------------------------------------------

N₂H₄ + 4OH^- + 2Cu²⁺ ==> 2Cu + N₂ + 4H₂O .. balanced redox equation