What are the oxidation numbers for Zn(OH)4 ^2-
Zn(OH)4= ; -2 = -4 + ?, Zn = +2 , the -4 is the charge on the 4 OH- ions. NO3- + 6 H2O + 8 e- -------> NH3 + 9 OH- ( Zn + 4 OH- ----> Zh(OH)4= + 2e-) x 4 7 OH- + NO3- + 4 Zn + 6 H2O -------> NH3 + 4 Zn(OH)4=
