Given the equation representing a system atequilibrium:HSO3^-(aq) + H2O(l) ⇌ SO3^2-(aq) + H3O^+(aq)According to one acid-base theory
- Mayya Alocci
- 3 days ago
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Regents Chemistry Exam January 2025 Question 48
48 Given the equation representing a system at
equilibrium:
HSO3^-(aq) + H2O(l) ⇌ SO3^2-(aq) + H3O^+(aq)
According to one acid-base theory
(1) HSO3- acts as an acid because it is an H+ donor
(2) HSO3- acts as an acid because it is an H+acceptor
(3) H2O acts as an acid because it is an H+ donor
(4) H2O acts as an acid because it is an H+ acceptor
Solution:
According to the Bronsted-Lowry theory, acid is a proton(H+) donor and base is a proton acceptor. Looking from left to right, H2O become H3O+, accepting a hydrogen ion. Therefore H2O is a base. HSO3- loses a hydrogen ion to become SO3^2- and is an acid. Choice 1 is the correct answer.
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