X1: KMnO4
X2: HCl
X3: Cl2
X4: KCl
X5: MnCl2
X6: KOH
X7: KClO
X8: H2
X9: HCl
Các PTHH:
\(2KMnO_4+16HCl\rightarrow2KCl+2MnCl_2+Cl_2+8H_2O\)
\(Cl_2+2KOH\rightarrow KCl+KClO+H_2O\)
\(2KCl+2H_2O\underrightarrow{^{đpmn}}2KOH+H_2+Cl_2\)
\(KCl+H_2SO_4\underrightarrow{^{to}}KHSO_4+HCl\)