2KI + Br2 = 2KBr + I2MgCl2 + 2NaOH = Mg(OH)2 + 2NaClCu(OH)2 => CuO + H2O2Zn(NO3)2 => 2ZnO + 4NO2 + O2
2KI + Br2 = 2KBr + I2
MgCl2 + 2NaOH = Mg(OH)2 + 2NaCl
Cu(OH)2 => CuO + H2O
2Zn(NO3)2 => 2ZnO + 4NO2 + O2