Which reaction is NOT a redox reaction?

\(BaC{l}_{2}+N{a}_{2}S{O}_{4}\to BaS{O}_{4}+2NaCl\)

\(Zn+CuS{O}_{4}\to ZnS{O}_{4}+Cu\)

\(2KCl{O}_{3}+{I}_{2}\to 2KI{O}_{3}+C{l}_{2}\)

\({H}_{2}+C{l}_{2}\to 2HCl\)