Answer :
Answer:
H3PO4+H2O<=> H2PO^-4 +H3O^+
H3PO4 is acid and H2PO4- is its conjugate base
H2O is base and H3O+ is its conjugate acid
H2PO4^- +H2O<=>HPO4^2- +H3O^+
H2PO4- is acid and HPO42- is its conjugate base
H2O is base and H3O+ is its conjugate acid
Answer : The conjugate acid-base pair are, [tex]H_2PO_4^-[/tex] and [tex]H_3O^+[/tex]
Explanation:
According to the Bronsted Lowry conjugate acid-base pair, an acid is a substance that donates protons and a base is a substance that accepts protons.
The given balanced reaction is,
[tex]H_3PO_4+H_2O\rightleftharpoons H_2PO_4^-+H_3O^+[/tex]
In this reaction, [tex]H_3PO_4[/tex] is a acid that donates a proton to [tex]H_2O[/tex] which is a base and to give [tex]H_2PO_4^-[/tex] as a conjugate base and [tex]H_3O^+[/tex] as a conjugate acid.
Therefore, the conjugate acid-base pair are, [tex]H_2PO_4^-[/tex] and [tex]H_3O^+[/tex]