Copper(II) chloride is a chemical compound with the formula CuCl2. It consists of one copper atom and two chloride ions. This compound is typically found as a blue-green solid and is soluble in water, forming a blue solution. It is commonly used in various applications, including as a catalyst in chemical reactions and in the production of pigments. In addition to its industrial uses, copper(II) chloride is also utilized in laboratories for experiments and demonstrations. It can be produced by reacting copper(II) oxide with hydrochloric acid or by reacting copper(II) carbonate with hydrochloric acid.