Question

Which of the following are the common products obtained when acetalde

• A. CH₃-COO⁻
• B. CO₂
• C. H₂O
• D. Cu₂O

Answer 1

Answer: (A), (C), (D)

A, C, D

Answer 2

Acetaldehyde ($CH_3CHO$) reacts with Fehling's solution, oxidizing to acetate ion ($CH_3COO^-$). Copper(II) ions ($Cu^{2+}$) are reduced to copper(I) oxide ($Cu_2O$), a red precipitate. Water ($H_2O$) is also a product. The reaction is: $2CH_3CHO(aq) + 2Cu^{2+}(aq) + 5OH^-(aq) \rightarrow 2CH_3COO^-(aq) + Cu_2O(s) + 3H_2O(l)$ Products are $CH_3COO^-$, $Cu_2O$, and $H_2O$. $CO_2$ is not formed.