Учший!FeS+2HCl = H2S+FeCl2 FeCl3 + LiOH = FeOH3+LiCl2 2HCl + СаСО3 = СаCl2 + СО2↑ + Н2О H2SO4+2 RbOH = RbSO4 + 2 H2O ZnCl2+CuSO4=Zn2SO3+CuCl BaCl2+2NaNO3 = 2NaCl+Ba(NO3)2 3Ca(OH)2+2H3PO4=Ca3(PO4)2+6H2O H2S + Pb(CH3COO)2=PbS+CH3COOH FeSO4 + Ba(NO3)2 = Fe (NO3)2 + BaSO4 2NaOH+N2O3=2NaNO2+H2O