\(4HCl + Mn{O_2}\buildrel {đun nhẹ} \over\longrightarrow C{l_2} \uparrow + 2{H_2}O + MnC{l_2}\)
\(16HCl + 2KMn{O_4}\buildrel {Mn{O_2}} \over\longrightarrow 5C{l_2} \uparrow + 2MnC{l_2} + 2KCl + 8{H_2}O\)
\(2NaCl + 2{H_2}O\mathrel{\mathop{\kern0pt\longrightarrow}\limits_{có màng ngăn}^{đp{\rm{dd}}}} 2NaOH + C{l_2} \uparrow + {H_2} \uparrow \)
