最佳答案:硫离子:S2- +H2O=HS- +OH-HS- +H2O=H2S+OH-银离子:Ag+ +H2O=AgOH+ H+(AgOH不稳定:2AgOH=Ag2O+H2
最佳答案:S2-+H2O==可逆==HS- +OH-(程度较大)HS-+H2O==可逆==H2S+OH-(程度较小)H2S是二元弱酸分步水解