An amphoteric anion is capable of both accept | vedclass

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(D) An amphoteric species is one that can act as both an acid (proton donor) and a base (proton acceptor). For an anion to be amphoteric,it must conta

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$HCO_3^-$

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(D) An amphoteric species is one that can act as both an acid (proton donor) and a base (proton acceptor). For an anion to be amphoteric,it must contain at least one hydrogen atom that can be donated as a proton $(H^+)$ and have a negative charge to accept a proton. In the case of $HCO_3^-$,it can donate a proton to form $CO_3^{2-}$ $(HCO_3^- \rightarrow H^+ + CO_3^{2-})$ and it can accept a proton to form $H_2CO_3$ $(HCO_3^- + H^+ \rightarrow H_2CO_3)$. Therefore,$HCO_3^-$ is an amphoteric anion.

An amphoteric anion is capable of both accepting and donating a proton in a suitable medium. Which of the following ions exhibits this property?

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