Question

What happens when H3PO4 is heated?

Answer 1

WHEN H3PO4  is heated it gives 2 products..........P2O5 and H2O 

Answer 2

Explanation:

When a compound dissociates to give two or more compounds then this type of reaction is known as dissociation reaction.

So, when we heat $H_{3}PO_{4}$ then it dissociates to give $P_{2}O_{5}$ and $H_{2}O$.

The chemical reaction for the same is as follows.

               $H_{3}PO_{4} \overset{heat}{\rightarrow} P_{2}O_{5} + H_{2}O$