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Question

Chemistry Question on Acids and Bases

The conjugate base of HPO42HPO^{2-}_4 is

A

PO43PO^{3-}_4

B

H2PO4H_2PO^-_4

C

H3PO4H_3PO_4

D

H3PO3H_3PO_3

Answer

PO43PO^{3-}_4

Explanation

Solution

HPO4<=>H++PO43HPO^{-}_{4} {<=>} H^{+}+PO^{3-}_{4} Base is obtained by loss of H+H^{+}