A) \[{{H}_{3}}{{O}^{+}}\]
B) \[HSO_{3}^{-}\]
C) \[SO_{3}^{2-}\]
D) \[SO_{4}^{2-}\]
Correct Answer: B
Solution :
The species which act as both an acid and a base is called amphoteric, e.g.,\[HSO_{3}^{2-}\]. \[\underset{acid}{\mathop{HSO_{3}^{2-}}}\,\xrightarrow[{}]{{}}{{H}^{+}}+SO_{3}^{2-}\] \[\underset{base}{\mathop{HSO_{3}^{-}}}\,+{{H}^{+}}\xrightarrow[{}]{{}}{{H}_{2}}S{{O}_{3}}\]
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