Answer : The correct option is, (2) an acid
Explanation:
As we know that when a substance (acid) that dissolves in water, it produces hydronium ion as a positive ion and conjugate base as a negative ion.
For example :
When [tex]CH_3COOH[/tex] (acid) dissolves in water, it produces hydronium ion as a positive ion and conjugate base as a negative ion.
The balanced reaction will be,
[tex]CH_3COOH+H_2O\rightarrow H_3O^++CH_3COO^-[/tex]
Therefore, the substance is, (2) an acid
