H2SO4 = 2 H+ + SO42-Ba(OH)2 = Ba2+ + 2 OH-NaHSO4 = Na+ + H+ + SO42-K2CO3 = 2 K+ + CO32-Fe2(SO4)3 = 2 Fe3+ + 3 SO42-NaHCO3 = Na+ + HCO3-NaHSO4（熔融） = Na+ + HSO4-在熔融态,NaHSO4中HSO4-是不电离的...