Is Orthophosphoric Acid Tetrabasic?

Which of the following is a tetrabasic acid (A) Hypophosphorous acid (B) Metaphosphoric acid (C) Pyrophosphoric acid (D) Orthophosphoric acid. Pyrophosphoric acid (H₄P₂O₇) contains four replaceable H-atoms. Hence, H₄P₂O₇is a tetrabasic acid.

Is pyrophosphoric acid a Tetrabasic acid?

Pyrophosphoric acid is also called diphosphoric acid. It contains four P−OH bonds which can donate their hydronium ions. It is a tetrabasic acid which means it can donate four hydronium ions to bases in various acid-base reactions.

What is possessed by pyrophosphoric acid?

Pyrophosphoric acid, also known as diphosphoric acid, is the inorganic compound with the formula H₄P₂O₇ or, more descriptively, [(HO)₂P(O)]₂O. Colorless and odorless, it is soluble in water, diethyl ether, and ethyl alcohol. The anhydrous acid crystallizes in two polymorphs, which melt at 54.3 °C and 71.5 °C.