以下除⑤等号都是可逆符号①K2S+2H2O=H2S+2KOHS2- +2H2O=H2S+2OH-②NaF+H2O=HF+NaOHF- +H2O=HF+OH-③不水解④NaHCO3+H2O=H2CO3+NaOHHCO3- +H2O=H2CO3+OH-⑤不水解，只有电离，NaHSO4=Na+ +H+ +SO42-
