A) \[{{H}_{2}}S{{O}_{4}}\]
B) \[HN{{O}_{3}}\]
C) \[{{H}_{2}}S{{O}_{3}}\]
D) \[HCl\]
Correct Answer: C
Solution :
\[{{H}_{2}}S{{O}_{3}}\]- sulphurous acid is a weak acid because it ionizes partially in water to form few hydrogen ions.
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