Final answer:
In water, (H₂SO₃) is a weak electrolyte, (HClO) is a weak electrolyte, (NH₃) is a nonelectrolyte, and (LiClO₄) is a strong electrolyte.
Step-by-step explanation:
In order to classify these substances as nonelectrolytes, weak electrolytes, or strong electrolytes in water, we need to determine if they dissociate into ions when dissolved.
(a) (H₂SO₃) is a weak electrolyte because it partially ionizes into H⁺ and HSO₃⁻ ions.
(b) (HClO) is a weak electrolyte because it partially ionizes into H⁺ and ClO⁻ ions.
(c) (NH₃) is a nonelectrolyte because it does not ionize into ions.
(d) (LiClO₄) is a strong electrolyte because it fully ionizes into Li⁺ and ClO₄⁻ ions.