Chemistry - Carboxylic acid and their Derivatives Question with Solution | TestHub

when malonic acid is warmed with${\mathrm{P}}_2{\mathrm{O}}_5$carbon suboxide is formed
$\mathrm{C}{\mathrm{H}}_2{\left(\mathrm{COOH}\right)}_2\stackrel{{\mathrm{P}}_2{\mathrm{O}}_5}{\to }\underset{\mathrm{C}\mathrm{a}\mathrm{r}\mathrm{b}\mathrm{o}\mathrm{n}\mathrm{s}\mathrm{u}\mathrm{b}\mathrm{o}\mathrm{x}\mathrm{i}\mathrm{d}\mathrm{e}}{{\mathrm{C}}_3{\mathrm{O}}_2+{\mathrm{H}}_2\mathrm{O}}$