ALCOHOLS, PHENOLS AND ETHER
15048
Ethanol is prepared industrially by
1 Hydration of ethylene
2 Fermentation of sugars
3 Both the above
4 None of these
Explanation:
(c) Hydration of alkenes
\(C{H_2} = C{H_2} + \mathop {{\text{ }}H}\limits^ + S{\mathop O\limits^ - _4} \to C{H_3} - C{H_2} - HS{O_4}\)
\(C{H_3} - C{H_2}HS{O_4}\mathop {\xrightarrow{{{H_2}O}}}\limits_{Boil} C{H_3} - C{H_2} - OH + {H_2}S{O_4}\)
Fermentation of sugars:
\({C_{12}}{H_{22}}{O_{11}} + {H_2}O\xrightarrow{{{\text{Invertase}}}}\mathop {{C_6}{H_{12}}{O_6}}\limits_{{\text{Glucose}}} + \mathop {{C_6}{H_{12}}{O_6}}\limits_{{\text{Fructose}}} \)
\(\mathop {{C_6}{H_{12}}{O_6}}\limits_{{\text{Glucose}}\,\,{\text{or}}\,{\text{Fructose}}} \xrightarrow{{{\text{Zymase}}}}\,2{C_2}{H_5}OH + 2C{O_2}\)
