\(\begin{array}{l}HBr \to {H^ + } + B{r^ - }\\HI \to {H^ + } + {I^ - }\\{H_2}S \mathbin{\lower.3ex\hbox{$\buildrel\textstyle\rightarrow\over{\smash{\leftarrow}\vphantom{_{\vbox to.5ex{\vss}}}}$}} {H^ + } + H{S^ - }\\HS - \mathbin{\lower.3ex\hbox{$\buildrel\textstyle\rightarrow\over{\smash{\leftarrow}\vphantom{_{\vbox to.5ex{\vss}}}}$}} {H^ + } + {S^{2 - }}\\KOH \to {K^ + } + O{H^ - }\\N{H_3} + {H_2}O \mathbin{\lower.3ex\hbox{$\buildrel\textstyle\rightarrow\over{\smash{\leftarrow}\vphantom{_{\vbox to.5ex{\vss}}}}$}} N{H_4}^ + + O{H^ - }\end{array}\)
Acid mạnh: HBr, HI
Acid yếu: H2S
Base mạnh: KOH
Base yếu: NH3