The conjugate base of HPO4^2- is PO4^3-.
NaH2PO4(aq) + H2OàH3PO4(aq) + NaOH(aq) H3PO4(aq)ßàH+(aq) + H2PO4_(aq) H2PO4-(aq)ßàH+(aq) + HPO42-(aq) HPO42-(aq)ßàH+(aq) + PO43-(aq)
There are two possibillities:Monohydrogen Phosphate ion: HPO42-Dihydrogen Phosphate ion: H2PO4-
Hydrogen has 1 valence electron, phosphorus has 5 valence electrons, and oxygen has 6 valence electrons. So, if you totaled all of the valence electrons in the ion HPO42- you'd get 1 + 5 + 6 X 4 + 2 = 32. However, you should realize that the term "valence electron" really only applies to individual atoms, not compounds. The only electrons one would concern themselves with in the HPO42- ion are the 2 that make it an ion.
Hydrogen Phosphate is HPO42-Monohydrogen phophate is HPO42-, while dihydrogen phosphate is H2PO4-H3PO4 is the molecule formula of phosphoric acid.
Base
PO43-
PO43- (phosphate) is the conjugate base of HPO42- (monohydrogen phosphate)
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)
PO43-
hpo42
its an acid, H2PO4- is called dihydrogen phosphate ion. It is the conjugate base of Phosphoric Acid H3PO4 and the conjugate acid of monohydrogen phosphate ion HPO42
Formula: HPO42-
Yes
monohydrogen phosphate
There are three protolysis steps:H3PO4 ---> H+ + H2PO4-H2PO4- ---> H+ + HPO42-HPO42- ---> H+ + PO43-
H3PO4==============Phosphoric acid.
'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)