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Q.
Species acting both as Bronsted acid and base is
Jharkhand CECEJharkhand CECE 2014
Solution:
$ \text{HSO}_{4}^{-} $ can accept proton to form $ {{\text{H}}_{\text{2}}}\text{S}{{\text{O}}_{\text{4}}} $ and also give a proton to form $ SO_{4}^{2-} $ therefore, it acts both as Bronsted acid as well as base.