X1: KMnO4
X2: HCl
X3: Cl2
X4: KCl
X5: MnCl2
X6: KOH
X7: KClO
X8: H2
X9: HCl
Các PTHH:
2KMnO4+ 16HCl -> 2KCl+ 2MnCl2+ 5Cl2+ 8H2O
Cl2+ 2KOH -> KCl+ KClO+ H2O
2KCl+ 2H2O $\buildrel{{đpmn}}\over\longrightarrow$ 2KOH+ H2+ Cl2
KCl+ H2SO4 $\buildrel{{t^o}}\over\longrightarrow$ KHSO4+ HCl