IG Chemistry-6 Electrochemistry (6.2)

Front

What gas forms at the anode when concentrated NaCl solution is electrolysed?

Back

Chlorine

Front

What are the ions present in molten Al₂O₃?

Back

Al³⁺ and O²⁻

Front

Which electrode do negatively charged ions migrate toward?

Back

Anode

Front

What is the name of the positive electrode in electrolysis?

Back

Anode

Front

What is produced at the anode during the electrolysis of molten NaCl?

Back

Chlorine gas

Front

What is electrolysis?

Back

A chemical process that uses electricity to drive a non-spontaneous reaction.

Front

What is the role of the cathode in electrolysis?

Back

It is the electrode where reduction occurs.

Front

What is the role of the anode in electrolysis?

Back

It is the electrode where oxidation occurs.

Front

What happens to sodium ions during the electrolysis of molten NaCl?

Back

They migrate to the cathode and are reduced to sodium metal.

Front

What is the overall reaction for the electrolysis of molten NaCl?

Back

2NaCl(l) → 2Na(s) + Cl₂(g) at the anode.