аKHS + KOH = K2SO4 + H2CrOHCl2 + HCl = CrCl2 + H2Na2SO3 + 2HCl = 2NaCl + H2O + SOPb(OH)2 + 2NaOH = Na2PbO2 + 2H2O
бZn^2+ + 2OH^- = Zn(OH)Ni(OH)2 + 2H^+ = Ni^2+ + 2H2HS^- + OH^- = S2^- + H2Ba^2+ + SO4^2- = BaSO4
а
KHS + KOH = K2SO4 + H2
CrOHCl2 + HCl = CrCl2 + H2
Na2SO3 + 2HCl = 2NaCl + H2O + SO
Pb(OH)2 + 2NaOH = Na2PbO2 + 2H2O
б
Zn^2+ + 2OH^- = Zn(OH)
Ni(OH)2 + 2H^+ = Ni^2+ + 2H2
HS^- + OH^- = S2^- + H2
Ba^2+ + SO4^2- = BaSO4