Which of the following species acts as both a | vedclass

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(B) $Br	ext{ø}nsted$ acid is a proton $(H^{+})$ donor,and a $Br	ext{ø}nsted$ base is a proton $(H^{+})$ acceptor.Species that can both donate and ac

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$HCO_3^{-}$

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(B) $Br	ext{ø}nsted$ acid is a proton $(H^{+})$ donor,and a $Br	ext{ø}nsted$ base is a proton $(H^{+})$ acceptor.Species that can both donate and accept a proton are called amphoteric.$HCO_3^{-}$ can act as an acid: $HCO_3^{-} ightarrow H^{+} + CO_3^{2-}$.$HCO_3^{-}$ can act as a base: $HCO_3^{-} + H^{+} ightarrow H_2CO_3$.Therefore,$HCO_3^{-}$ acts as both a $Br	ext{ø}nsted$ acid and a $Br	ext{ø}nsted$ base.

Which of the following species acts as both a $Br\text{ø}nsted$ acid and a $Br\text{ø}nsted$ base?

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