Question

Conjugate base of H3P04

Answer 1

The conjugate base of H3PO4 (phosphoric acid) is H2PO4−, also known as dihydrogen phosphate ion. When phosphoric acid donates a proton (H+) from one of its hydrogen atoms, it forms the dihydrogen phosphate ion as its conjugate base

The conjugate base of H₃PO₄ (phosphoric acid) is derived by removing a hydrogen ion (H⁺) from the acid. In this case, the conjugate base is called a phosphate ion (PO₄³⁻), as it has a charge of 3- to balance the removal of the H⁺ ion. The balanced equation for the deprotonation of H₃PO₄ is as follows:

H₃PO₄ ⇌ H⁺ + H₂PO₄⁻

The H₂PO₄⁻ ion is the first deprotonation product, which can further lose another H⁺ to form the HPO₄²⁻ ion, and subsequently, the HPO₄²⁻ ion can lose another H⁺ to form the final phosphate ion (PO₄³⁻).