Glycerol was distilled with oxalic acid cryst | vedclass

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(D) When glycerol is heated with oxalic acid at $110^{\circ}C$,it undergoes decarboxylation to produce formic acid $(HCOOH)$: $HOOC-COOH \xrightarrow{

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$HCOOH$

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(D) When glycerol is heated with oxalic acid at $110^{\circ}C$,it undergoes decarboxylation to produce formic acid $(HCOOH)$: $HOOC-COOH \xrightarrow{	ext{Glycerol}} HCOOH + CO_2$ Formic acid $(HCOOH)$ acts as a reducing agent and reduces Fehling solution to give a red precipitate of cuprous oxide $(Cu_2O)$: $HCOOH + 2Cu^{2+} + 5OH^- 	o Cu_2O + CO_3^{2-} + 3H_2O$ Thus,the formation of cuprous oxide is due to the presence of $HCOOH$.

Column-$1$ (Acid)	Column-$2$ ($pK_a$ value)
$A. CH_3COOH$	$I. 0.23$
$B. F_3CCOOH$	$II. 3.41$
$C. \text{Benzoic acid}$	$III. 4.19$
$D. p\text{-Nitrobenzoic acid}$	$IV. 4.76$

Glycerol was distilled with oxalic acid crystals and the products were led into Fehling solution and warmed. Cuprous oxide was precipitated. It is due to

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Match the following:
Column-$1$ (Acid) Column-$2$ ($pK_a$ value)
$A. CH_3COOH$ $I. 0.23$
$B. F_3CCOOH$ $II. 3.41$
$C. \text{Benzoic acid}$ $III. 4.19$
$D. p\text{-Nitrobenzoic acid}$ $IV. 4.76$

The correct match is:

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