When acetaldehyde is heated with Fehling's solution, a red ppt is formed. The red ppt is due to the formation of:

Question

When acetaldehyde is heated with Fehling's solution, a red ppt is formed. The red ppt is due to the formation of: (A) Cu (B) CuO (C) Cu2O (D) Cu+Cu2O+CuO

Tardigrade Admin · Accepted Answer

Fehling's solution is tartaric acid complex of cupric ions. When it is heated with acetaldehyde, a red precipitate of cuprous oxide

((C u)_{2} O)

is obtained.
In this reaction, acetaldehyde reduces cupric ions to cuprous ions.
When it is heated with acetaldehyde, a red precipitate of cuprous oxide

((C u)_{2} O)

is obtained. In this reaction, acetaldehyde reduces cupric ions to cuprous ions.

C H_{3} C H O + 2 C u O \to C H_{3} COO H + R e d ppt C u_{2} O ↓

Q. When acetaldehyde is heated with Fehling's solution, a red ppt is formed. The red ppt is due to the formation of:

$C u$

$C u O$

$C u_{2} O$

$C u + C u_{2} O + C u O$

Q. When acetaldehyde is heated with Fehling's solution, a red ppt is formed. The red ppt is due to the formation of:

Cu

CuO

Cu2​O

Cu+Cu2​O+CuO

$C u$

$C u O$

$C u_{2} O$

$C u + C u_{2} O + C u O$