\(\overset{0}{\mathop{{{P}_{4}}}}\,+3NaOH+3{{H}_{2}}O\to \underset{\begin{smallmatrix}
\,\,\,\,\,\,\,\text{Sodium} \\
\text{hypophosphite}
\end{smallmatrix}}{\mathop{3Na{{H}_{2}}P{{O}_{2}}}}\,+\overset{-3\,\,\,\,\,\,\,\,\,}{\mathop{P{{H}_{3}}}}\,\)
$5{H_2}{O_2} + \,xCl{O_2}\, + 2O{H^ - }\, \to \,xC{l^ - }\, + \,y{O_2} + 6{H_2}O$