Question

What product is formed on disproportionation of ${\mathrm{H}}_3{\mathrm{PO}}_3$?

Answer 1

Disproportionation reaction

• “In a disproportionation reaction, an element in one oxidation state is simultaneously oxidized and reduced.”

Disproportionation of ${\mathrm{H}}_3{\mathrm{PO}}_3$

• The reaction for the disproportionation of ${\mathrm{H}}_3{\mathrm{PO}}_3$ is as follows:-
• $4{\mathrm{H}}_3{\mathrm{PO}}_3\left(\mathrm{s}\right)\to 3{\mathrm{H}}_3{\mathrm{PO}}_4\left(\mathrm{s}\right)+{\mathrm{PH}}_3\left(\mathrm{g}\right)$
• So, the formation of phosphoric acid$\left({\mathrm{H}}_3{\mathrm{PO}}_4\right)$, and phosphine gas$\left({\mathrm{PH}}_3\right)$ takes place in the disproportionation of ${\mathrm{H}}_3{\mathrm{PO}}_3$.