Acetaldehyde on warming with Fehling solution gives a red precipitate of

Question

Acetaldehyde on warming with Fehling solution gives a red precipitate of (A) Elemental copper (B) Cuprous oxide (C) Cupric oxide (D) Mixture of all of the above

Tardigrade Admin · Accepted Answer

Aldehyde on warming with Fehling solution give a red precipitate of cuprous oxide RCHO+2Cu (OH)2+NaOH → RCOONa+ underset textred pptCu2O+3H2O

Q. Acetaldehyde on warming with Fehling solution gives a red precipitate of

Elemental copper

Cuprous oxide

Cupric oxide

Mixture of all of the above

Aldehyde on warming with Fehling solution give a red precipitate of cuprous oxide
$RC H O + 2 C u (O H)_{2} + N a O H \to RCOON a + red ppt C u_{2} O + 3 H_{2} O$

Q. Acetaldehyde on warming with Fehling solution gives a red precipitate of

Elemental copper

Cuprous oxide

Cupric oxide

Mixture of all of the above

Aldehyde on warming with Fehling solution give a red precipitate of cuprous oxide RCHO+2Cu(OH)2​+NaOH→RCOONa+red pptCu2​O​+3H2​O

Aldehyde on warming with Fehling solution give a red precipitate of cuprous oxide
$RC H O + 2 C u (O H)_{2} + N a O H \to RCOON a + red ppt C u_{2} O + 3 H_{2} O$