Zn+ H2SO4= ZnSO4+ H2 BaCl3 + Na2SO4= BaSO4 + 2 NaCl FeCl3 + 3 NaOH = Fe(OH)3 + 3NaCl 2 HCl + Na2CO3 = 2 NaCl + H2O + CO2
Zn+SO2 BaCL+NaOH FeCL+NaOH