The compound which reacts with Fehling soluti | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) Aliphatic aldehydes react with Fehling's solution to give a reddish-brown precipitate of $Cu_2O$,while aromatic aldehydes and most carboxylic acid

Vedclass · Accepted Answer

$HCOOH$

Vedclass · Answer

(B) Aliphatic aldehydes react with Fehling's solution to give a reddish-brown precipitate of $Cu_2O$,while aromatic aldehydes and most carboxylic acids do not react. However,formic acid $(HCOOH)$ contains an aldehydic group $(-CHO)$ attached to a hydrogen atom,which makes it a reducing agent. Therefore,formic acid gives a positive Fehling's test. The reaction is: $HCOOH + 4OH^{-} + 2Cu^{2+} \rightarrow CO_2 + 3H_2O + Cu_2O$ (red precipitate).

The compound which reacts with Fehling solution is

Similar Questions

The product $(D)$ in the following reaction sequence is: $HOCH_2CH_2CH_2COOCH_2CH_3$ $\xrightarrow{PCC} (A)$ $\xrightarrow[{(1 \ molar \ equivalent)}]{H_2C=CHMgBr} (B)$ $\xrightarrow{NH_4Cl/H_2O} (C)$ $\xrightarrow[H_2O]{KOH}$ $\xrightarrow{H_3O^{+}}$ $\xrightarrow[pyridine]{(CH_3CO)_2O} (D)$

The most acidic of the following is

The $pK_a$ values of four carboxylic acids are $4.76, 4.19, 0.23$ and $3.41$ respectively. The $pK_a$ value of the strongest carboxylic acid among them is

Which of the following is the strongest acid?

$A$ is a high molecular weight phenol and $B$ is an aromatic carboxylic acid. Which of the following would you use to separate a mixture of $A$ and $B$?

Vedclass Test Series

Exam Paper Generator

Online Exam Module