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Which is not a conjugate acid/base pair ...

Which is not a conjugate acid/base pair ?

A

`H_2CO_3 and CO_3^(2-)`

B

`HSO_4^- and SO_4^(2-)`

C

`H_2PO_4^(-) and HPO_4^(2-)`

D

`H_3O^(+) and H_2O`

Text Solution

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The correct Answer is:
A
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