The document describes the electrolysis of a copper chloride solution using a voltage of 6V. During the process, chlorine gas is produced at one electrode while solid copper forms at the other electrode, as electrons are involved in the transfer of copper and chlorine between electrode reactions. Key reactions include the formation of chlorine gas at the anode from chloride ions and copper metal at the cathode from copper ions gaining electrons.

1. Electrolysis of a solution Cu Cl 2 +ve -ve 6V Copper Chloride Solution A gas A solid

2. True (T), False (F) or can’t tell (N)

3. “ 3. I think that chlorine gas appears at one electrode as copper appears at the other electrode.” 1. “ I think the copper appears at one electrode because it is a metal and magnetic.” 2. “ I don’t think that any electrons are involved in this process.” Copper Chloride Solution Cu Cl 2 A gas A solid

4. “ 6. Chlorine is a non-metal and covalent and therefore does not conduct electricity.” “ 4. Copper is formed at the anode (+) and is therefore positive.” “ 5. Cl 2 bubbles appear at the anode and So Cl 2 must be negative.” Copper Chloride Solution Cu Cl 2 Chlorine copper

5. “ 9. Copper ion needs electrons to form copper metal at the cathode (-).” 7. “ Copper is a metal and forms ionic compounds. Copper chloride is therefore an ion and conducts electricity” “ 8. Chlorine must be formed from the negative chloride ion at the anode (+).” Copper Chloride Solution Cu Cl 2 Chlorine Copper