Give the reaction for the following conversions:
$1$. Ethyne from ethene via bromination
$2$. Bromoethane from ethyne
$1$. Ethyne from ethene via bromination
$2$. Bromoethane from ethyne
(N/A) $1$. Ethyne from ethene:
$CH_2=CH_2 + Br_2$ $\xrightarrow{CCl_4} CH_2Br-CH_2Br$ $\xrightarrow{alc. KOH, \Delta} CH_2=CHBr$ $\xrightarrow{NaNH_2} CH \equiv CH$
$2$. Bromoethane from ethyne:
$CH \equiv CH + 2H_2$ $\xrightarrow{Ni, \Delta} CH_3-CH_3$ $\xrightarrow{Br_2, h\nu} CH_3CH_2Br + HBr$
$CH_2=CH_2 + Br_2$ $\xrightarrow{CCl_4} CH_2Br-CH_2Br$ $\xrightarrow{alc. KOH, \Delta} CH_2=CHBr$ $\xrightarrow{NaNH_2} CH \equiv CH$
$2$. Bromoethane from ethyne:
$CH \equiv CH + 2H_2$ $\xrightarrow{Ni, \Delta} CH_3-CH_3$ $\xrightarrow{Br_2, h\nu} CH_3CH_2Br + HBr$
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