Which of the following can act as an acid and as a base [AMU 1999]

1.	Which of the following can act as an acid and as a base [AMU 1999]
A.	\[HClO_{3}^{-}\]
B.	\[{{H}_{2}}PO_{4}^{-}\]
C.	\[H{{S}^{-}}\]
D.	All of these
Answer» E.

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Which of the following can act as an acid and as a base [AMU 1999]

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