Final answer:
HC₂H3O2, also known as acetic acid, is soluble in water due to its polar nature.
Step-by-step explanation:
HC₂H3O2 is soluble in water. When it is dissolved in water, it dissociates into its ions: H+ and C₂H3O2-. This compound is known as acetic acid, which is the main component of vinegar. Acetic acid easily dissolves in water due to the polar nature of both the compound and water molecules.
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