Question

The major products obtained in the reaction of oxalic acid with conc. $H_{2}S{O}_4$ upon heating are:

• A. $CO,C{O}_2,H_{2}O$
• B. $CO,S{O}_2,H_{2}O$
• C. $H_{2}S,CO,H_{2}O$
• D. $HCOOH,H_{2}S,CO$

Answer 1

The correct option is A $CO,C{O}_2,H_{2}O$

On heating, oxalic acid gets dehydrated and decomposed.
$(COOH{)}_2.H_{2}O+H_{2}S{O}_4\stackrel{\Delta }{\to }C{O}_2+CO+[H_{2}S{O}_4.3H_{2}O]$