MHT CET 2022 Chemistry question

According to Bronsted - Lowry theory the acids in the following reaction are \mathrm{ClO_4^- + HCO_3^- \longrightarrow HClO_4 + CO_3^{2-}}

(A) and Correct
(B) and
(C) and
(D) and

Answer: (A)

Solution

A Bronsted-Lowry acid is a proton donor and a base is a proton acceptor. Taking the reaction in both directions: in the forward direction donates a proton to , giving and ; so is an acid and is a base. In

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Question ID VK-097114