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(D) The organic compound $X$ gives a red precipitate with Fehling's solution,which indicates that $X$ is an aliphatic aldehyde (specifically,acetaldeh

Vedclass · Accepted Answer

$C_2H_2 + H_2O \xrightarrow[1 \% HgSO_4, 60^{\circ}C]{40 \% H_2SO_4} X$

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(D) The organic compound $X$ gives a red precipitate with Fehling's solution,which indicates that $X$ is an aliphatic aldehyde (specifically,acetaldehyde,$CH_3CHO$).Reaction $D$ is the hydration of acetylene $(C_2H_2)$ in the presence of $40 \% H_2SO_4$ and $1 \% HgSO_4$ at $60^{\circ}C$,which yields acetaldehyde $(CH_3CHO)$ as the major product.$C_2H_2 + H_2O \xrightarrow[1 \% HgSO_4, 60^{\circ}C]{40 \% H_2SO_4} CH_3CHO$ (Acetaldehyde)Acetaldehyde reacts with Fehling's solution upon heating to form a red precipitate of cuprous oxide $(Cu_2O)$.

An organic compound $X$ gives a red precipitate on heating with Fehling's solution. Which one of the following reactions yields $X$ as a major product?

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