If a dilute solution of copper(II) chloride is electrolysed, what gas will be produced at the anode? Answer in words not symbols.

When a dilute solution of copper(II) chloride is electrolyzed, the gas produced at the anode is chlorine gas. In the electrolysis process, the solution contains dissolved copper ions (Cu²⁺) and chloride ions (Cl⁻). During electrolysis, oxidation occurs at the anode. The chloride ions are oxidized, releasing electrons and resulting in the formation of chlorine gas. This process can be summarized by the following steps:

1. Chloride ions, which are negative, migrate towards the positively charged anode.
2. At the anode, the chloride ions lose electrons (oxidation), leading to the release of chlorine gas into the atmosphere.
3. The overall reaction involves the formation of molecular chlorine, which can be observed as bubbling or fizzing at the anode.

Thus, the primary gas produced during the electrolysis of a dilute copper(II) chloride solution at the anode is chlorine gas.