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.