其它制备氯气的原理

电解饱和食盐水

$\ce{2NaCl + 2H2O}\xlongequal[]{通电}$$\ce{2NaOH + H2 ^ + Cl2 ^}$

$\ce{2KMnO4 + 16HCl(浓) = }$ $\ce{2MnCl2 + 2KCl + 8H2O + 5Cl2 ^}$

$\ce{KClO3 + 6HCl(浓) =}$ $\ce{KCl + 3Cl2 ^ + 3H2O}$

$\ce{Ca(ClO)2 + 4HCl(浓) =}$ $\ce{CaCl2 + 2Cl2 ^ + 2H2O}$