Question

Write the name and structure of any five oxoacids of phosphorus?

Answer 1

Hint:. We know that oxoacids contain oxygen. In the oxoacids, there are different types of bond-like P-OH, P=O bond, and many more. The formation of different oxoacids also depends upon the oxidation state of phosphorus. We can name, and draw the structure of phosphorus.

Complete step by step answer:
-First, we will discuss the bonds found in the oxoacids; as mentioned there is the presence of one $P-OH,\text{or }P=O$ bond. But bonds like P-P or P-H can be also there in consideration with the other bonds.
-We also mentioned the factor oxidation state, then it should be less than +5 for the phosphorus.
-Now, we will draw the structures of five oxoacids of phosphorus.

-Now, we can see the five structures. Let us discuss these structures.
-The first we have ${{H}_{3}}P{{O}_{4}}$, in this structure, there are three P-OH bonds and one $P=O$ bond; it represents the tetrahedral representation. It is named as orthophosphoric acid.

-The second structure we have ${{H}_{3}}P{{O}_{3}}$, in this structure we can see P-H bond in addition to the P-OH, and $P=O$ bonds. It is named as orthophosphorous acid.

-The third we have ${{H}_{3}}P{{O}_{2}}$, in this structure we can see the presence of 2P-H bonds, and it is named as hypophosphorous acid.

-The fourth we have ${{H}_{4}}{{P}_{2}}{{O}_{7}}$, in this we can see the presence of P-O-P bond, and it is named as pyrophosphoric acid.

-The last we have ${{H}_{3}}P{{O}_{5}}$, in this structure we can see the P-O-OH bond, or we can say peroxide bond, so it named as polyphosphoric acid.
-In the last, we can conclude that the above mentioned are oxoacids of phosphorus.

Note: Don’t get confused while drawing the structures of the oxoacids of phosphorus, just complete the valency of phosphorus. In all these structures phosphorus depicts the oxidation state less than 5.