Question

Propanone can be prepared from ethyne by__________.

• A. passing a mixture of ethyne and steam over a catalyst, magnesium at ${420}^{o}C$
• B. passing a mixture of ethyne and ethanol over a catalyst zinc chromite
• C. boiling ethyne with water and $H_{2}S{O}_4$
• D. treating ethyne with iodine and NaOH

Answer 1

Answer: (A)

passing a mixture of ethyne and steam over a catalyst, magnesium at ${420}^{o}C$

$2CH\equiv CH+3H_{2}O\underset{Zincvanadate}{\underset{Mgor}{\overset{{420}^{o}C}{}}}C{H}_{3}COC{H}_3+C{O}_2+2H_2$

From the above reaction propanone can be prepared from ethyne by passing a mixture of ethyne and stream over a catalyst, magnesium at $420℃$