a
$\begin{array}{*{20}{c}}
{2NaOH + C{l_2} \to NaCl + NaOCl + {H_2}O} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \downarrow \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \downarrow } \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,N{a^ + }\,C{l^ - }\,\,\,\,N{a^ + }\,OC{l^ - }}
\end{array}$