The reddish brown precipitate formed in the Fehling’s test for aldehydes (RCHO) is due to the formation of

Question

The reddish brown precipitate formed in the Fehling’s test for aldehydes (RCHO) is due to the formation of (A) Cu (B) Cu2O (C) CuO (D) (RCOO)2 Cu

Tardigrade Admin · Accepted Answer

Fehling’s reagent is a mixture of aqueous copper sulphate and alkaline sodium potassium tartarate. When an aldehyde is heated with Fehling’s reagent a reddish brown precipitate is obtained and the aldehydes are oxidised to corresponding carboxylate anion. This reddish brown precipitate is due to the formation of copper oxide. <img class="img-fluid question-image" alt="image" src="https://cdn.tardigrade.in/img/question/chemistry/152653a040928018454c135802ed9b6f-.jpeg" />

Q. The reddish brown precipitate formed in the Fehling’s test for aldehydes $(RC H O)$ is due to the formation of

$C u$

$C u_{2} O$

$C u O$

$(RCOO)_{2} C u$

Q. The reddish brown precipitate formed in the Fehling’s test for aldehydes (RCHO) is due to the formation of

Cu

Cu2​O

CuO

(RCOO)2​Cu

Q. The reddish brown precipitate formed in the Fehling’s test for aldehydes $(RC H O)$ is due to the formation of

$C u$

$C u_{2} O$

$C u O$

$(RCOO)_{2} C u$