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It is acid AND base together, at the same time (amphoteric).

acid : HPO42- + H2O <---> H3O+ + PO43- pKa = 12.32 (very weak acid)

base: HPO42- + H2O <---> OH- + H2PO4- pKb = 6.79 (rather weak base)

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13y ago
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AnswerBot

5mo ago

HPO4^2- is considered a weak acid. It can act as a buffer in solutions to help maintain a stable pH.

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10y ago

It is amphiprotic, meaning that it can be either an acid or a base by either gaining or losing an election. In either case, it is very weak.

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Q: Is HPO4 2 acid or base?
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Related questions

Is HPO4 2 acid or base when mixed with NO2?

HPO4^2- is an acidic species as it can donate a proton (H+) in solution. NO2, on the other hand, can act as a base by accepting a proton. When mixed together, they can form a reaction where HPO4^2- donates a proton to NO2, leading to the formation of H2PO4^- and NO2^-.


Conjugate acid of HPO4 2?

H3PO4==============Phosphoric acid.


What is the conjugate base for hpo4 -2?

The conjugate base for HPO4^2- is H2PO4^-.


What is Bronsted-Lowry acid and base for HPO4 2- plus H plus?

Hpo2- +f-


What is the cinjuate base of HPO4-2?

The conjugate base of HPO4^-2 is PO4^-3 because when HPO4^-2 loses a single hydrogen ion in a reaction, it forms PO4^-3.


Is PO4 and HPO3 conjugate acid base pair?

Yes, PO4 and HPO3 are a conjugate acid-base pair. PO4 can act as a base to form HPO3, while HPO3 can act as an acid to form PO4. This is because they differ by a proton (H+).


What is the conjugate acid of HPO43?

'Conjugate' means ONE proton more (acid) or less (base) than the described acid or base respectively:So the conjugate acid of PO43- (phosphate) is HPO42- (monohydrogen phosphate)


What is the conjugate base of HPO4 2?

The conjugate base of HPO4 2- is H2PO4 -, which results from the loss of one hydrogen ion (H+) from the dihydrogen phosphate ion.


Conjugate base of H2Po4?

H3PO4 (aq) + H2O (l) ---> 2H3O+ (aq) + PO4-3 (aq)donor acid + acceptor base ---> conjugate acid + conjugate basethe answer above is wrongto form a conjugate, the ion H2PO4 - must lose a hydrogen ion H+i.eH2PO4 - -H+ = HPO4 2-(conjugate base)


What is conjugate base of H2PO4 ion?

The conjugate base of the H2PO4 ion is the HPO4^2- ion. This is formed when H2PO4 loses a hydrogen ion (H+).


How do you write a conjugate base for HPO4 -2?

To write the conjugate base of HPO4 2-, simply remove one hydrogen ion (H+) from the molecule. The formula for the conjugate base would be H2PO4 -.


Is K2HPO4 an acid or base?

K2HPO4 is a salt derived from a weak acid (H3PO4) and a strong base (KOH). It behaves as a basic salt because the conjugate base of the weak acid (HPO4^2-) can accept protons in a reaction.