a. [tex]a,NaCl\overset{H2SO4}{\rightarrow}HCl\overset{Fe}{\rightarrow}FeCl_{2}\overset{Cl_{2}}{\rightarrow}FeCl_{3}\overset{AgNO_{3}}{\rightarrow}AgCl\overset{t^{0}}{\rightarrow}Cl_{2}\overset{Ca(OH)_{2}}{\rightarrow}CaOCl_{2}[/tex]
[tex]b,NaCl\xrightarrow[dpddcmn]{H_{2}O}Cl_{2}\overset{KOH(t^{0})}{\rightarrow}KClO_{3}\overset{t^{0}}{\rightarrow}KCl\overset{H_{2}SO_{4}}{\rightarrow}HCl\overset{Fe(OH)_{3}}{\rightarrow}FeCl_{3}\overset{NaOH}{\rightarrow}NaCl[/tex]
c,[tex]KClO_{3}\overset{HCl(dac)}{\rightarrow}Cl_{2}\overset{Ca(OH)_{2}nhao}{\rightarrow}CaOCl_{2}\overset{HCl}{\rightarrow}Cl_{2}\overset{NaOH}{\rightarrow}NaClO\overset{HCl}{\rightarrow}Cl_{2}\overset{H2O}{\rightarrow}HClO+HCl[/tex]