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  4. Which among the following species can act as both acid and base as per Bronsted theory?

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Q. Which among the following species can act as both acid and base as per Bronsted theory?

NTA AbhyasNTA Abhyas 2022

Solution:

According to Bronsted - Lowry concept , a Bronsted acid is a substance Which can donate a proton to other substance and a Bronsted base is a substance which can accept a proton from any other substance.
( $\left.HSO _4\right)^{-}$can accept and donate a proton
$\left(HSO _4\right)^{-}+ H ^{+} \rightarrow H_2SO _4$
$\left( HSO _4\right)^{-} -H ^{+} \rightarrow SO _{4} ^{2-}$