Question

The anhydride of H3PO4 is

• A. $P_{2}O_{5}$
• B. $P_{2}O_{3}$
• C. $PO_{2}$
• D. None

Answer 1

Answer: (A)

$P_{2}O_{5}$

Answer 2

P has + 5 oxidation number in P2O5 and H3PO4