b
\((b)\) \(C{{H}_{2}}=C{{H}_{2}}\xrightarrow{HOCl}\underset{\underset{Cl\,\,\,\,\,}{\mathop{\,\,|\,\,\,\,\,\,\,\,\,\,}}\,}{\mathop{C{{H}_{2}}}}\,-\underset{\underset{OH\,\,\,}{\mathop{\,\,|\,\,\,\,\,\,\,\,\,}}\,}{\mathop{C{{H}_{2}}}}\,\xrightarrow{aqNaHC{{O}_{3}}}\underset{\text{Glycol}}{\mathop{\underset{\underset{\,\,\,\,\,\,\,\,\,\,C{{H}_{2}}-OH\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}}\,}{\mathop{C{{H}_{2}}-OH}}\,}}\,\)