General Chemistry: Principles and Modern Applications (10th Edition)

Published by Pearson Prentice Hal
ISBN 10: 0132064529
ISBN 13: 978-0-13206-452-1

Chapter 16 - Acids and Bases - 16-1 Concept Assessment - Page 702: 16-1


(a) Yes (b) No (c) No (d) Yes (e) No

Work Step by Step

A conjugate acid-base has only one $H^+$ as a difference. To check this description, take the acid and write its reaction: (a) $HCO_3^-(aq) + H_2O(aq)$ $CO_3^{2-}(aq) + H_3O^+(aq)$ As we can see, we get $CO_3^{2-}$, so $HCO_3^-$ is its conjugate base. But, if the result is different: (b) $HSO_3^-(aq) + H_2O(aq)$ $SO_3^{2-}(aq) + H_3O^+(aq)$ $SO_3^{2-} \ne SO_4^{2-}$, so they are not a conjugate acid-base pair.
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