Final answer:
A solution of copper chloride and water can be separated by evaporation, precipitation reactions, or electrochemical processes.
Step-by-step explanation:
One way to separate a solution of copper chloride and water into its starting substances is through evaporation. When the solution is heated, the water will evaporate and leave behind the copper chloride as a solid. The solid can then be collected and further processed if needed.
Another method is through chemical reactions. For example, adding sodium carbonate to the solution will cause a precipitation reaction, forming copper carbonate. The copper carbonate can then be filtered or centrifuged to separate it from the solution.
One more technique is through electrochemical processes. By using an electrochemical cell, copper ions can be reduced back to copper metal, while the chloride ions can be oxidized into chlorine gas. This allows for the separation of the copper and chloride ions.