MCQ
The compound which reacts with Fehling solution is
- A${C_6}{H_5}COOH$
- ✓$HCOOH$
- C${C_6}{H_5}CHO$
- D$C{H_2}ClC{H_3}$
✓
Answer
Correct option: B.
$HCOOH$
b
Aliphatic aldehydes on treatment with Fehling's solution gives a reddishbrown precipitate while aromatic aldehydes, acids do not. but Formic acid has aldehydic $(- CHO )$ functional groups. Hence, it gives Fehling's test positive.
Aliphatic aldehydes on treatment with Fehling's solution gives a reddishbrown precipitate while aromatic aldehydes, acids do not. but Formic acid has aldehydic $(- CHO )$ functional groups. Hence, it gives Fehling's test positive.
The reaction of formic acid with Fehling's reagent:
$HCOOH +4 OH ^{-}+2 Cu ^{2+}(\text { in complex }) \rightarrow CO _2+3 H _2 O + Cu _2 O$
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