Multiple choice What happens when copper chloride is electrolysed? Copper chloride is broken down to form copper. Chlorine gas is formed. It turns black in colour. Both 1 and 2 Reveal answer Fill a bubble to check yourself D Correct answer Explanation If electricity is passed through a copper chloride solution, copper chloride is broken down to form copper metal and chlorine gas. Positively charged ions move to the negative electrode during electrolysis.