Phương trình minh họa - Axit clohidric \[\begin{gather

Phương trình minh họa

- Axit clohidric

\[\begin{gathered}
  Mg + 2HCl \to MgC{l_2} + {H_2}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \hfill \\
  MgO + 2HCl \to MgC{l_2} + {H_2}O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \hfill \\
  Mg{(OH)_2} + 2HCl \to MgC{l_2} + 2{H_2}O\,\,\,\,\,\,\,\, \hfill \\
  MgC{O_3} + 2HCl \to MgC{l_2} + C{O_2} + {H_2}O \hfill \\ 
\end{gathered} \]

- Axit sunfuric

\[\begin{gathered}
  Fe + {H_2}S{O_4} \to FeS{O_4} + {H_2}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \hfill \\
  NaOH + {H_2}S{O_4} \to N{a_2}S{O_4} + {H_2}O\,\,\,\,\,\,\,\,\,\,\,\,\,\, \hfill \\
  CaO + {H_2}S{O_4} \to CaS{O_4} + {H_2}O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \hfill \\
  CaC{O_3} + {H_2}S{O_4} \to CaS{O_4} + C{O_2} + {H_2}O \hfill \\ 
\end{gathered} \]

Điều chế \[{H_2}S{O_4}\]

\[S + {O_2}\xrightarrow{{{t^o}}}S{O_2}\] (GĐ 1)

\[2S{O_2} + {O_2}\overset {{t^o},xt} \leftrightarrows 2S{O_3}\] (GĐ 2)

\[nS{O_3} + {H_2}S{O_4} \to {H_2}S{O_4}.nS{O_3}\] (oleum) (GĐ 3)

Hòa tan oleum bằng nước thu được dung dịch axit sunfuric.