JEE Main 26-Aug-2021 Shift 2 Solved Paper

The final product will be H3PO4 because the oxidation state will remain unchanged in sequence of the reaction.
PCl5

H2O

──▶

POCl5

H2O

───▶

H3PO4
H3PO4 has three P−OH bonds and no P−H bond. The hydrogen atoms in O—H bonds are ionisable in ortho
phosphoric acid. The P—H bonds are non-ionisable. Hence, number
of non-ionisable bond in H3PO4 is zero.