According to solubility rules, most chlorides (Cl⁻) are soluble in water, with notable exceptions being those of silver (Ag⁺), lead (Pb²⁺), and mercury (Hg₂²⁺). Since CuCl₂ contains copper (Cu²⁺) and does not fall into any of those exceptions, we can conclude that copper(II) chloride is soluble in water.
In practice, when CuCl₂ is added to water, it dissociates into copper ions (Cu²⁺) and chloride ions (Cl⁻), resulting in a clear solution. This characteristic makes it commonly used in various applications, including electroplating and as a reagent in chemical reactions.