1)2 HCl = H2 + Cl2 3) 2KBr =2 K + Br2
Cl2 + Cu = CuCl2 2 Fe + 3Br2 =2 FeBr3
CuCl2 +2 NaOH = Cu(OH)2 +2 NaCl FeBr3 +3 NaOH = Fe(OH)3 + 3NaBr
2Fe(OH)3 = Fe2O3 +3 H2O
Cu(OH)2 = CuO + H2O
2) Cl2 + H2 = 2HCl
2 HCl + 2Na =2 NaCl + H2
2NaCl =2 Na + Cl2
2Fe + 3Cl2 =2 FeCl3