Electrolysis of Molten Compounds Flashcard

Front

What is electrolysis?

Back

Electrolysis is a chemical process that uses electricity to break down compounds into their individual elements or ions.

Front

What is the main product at the negative electrode (cathode) during the electrolysis of molten aluminium oxide?

Back

Aluminium metal.

Front

What occurs at the negative electrode (cathode)?

Back

Reduction occurs, where a substance gains electrons.

Front

What is the main reason for using inert electrodes in electrolysis?

Back

To prevent the electrodes from reacting with the electrolyte.

Front

What is the main product at the positive electrode (anode) during the electrolysis of molten sodium chloride?

Back

Chlorine gas.

Front

What is the role of an electrolyte in electrolysis?

Back

An electrolyte is a substance that conducts electricity when molten or dissolved in water, allowing ions to move.

Front

What is the difference between oxidation and reduction?

Back

Oxidation is the loss of electrons, while reduction is the gain of electrons.

Front

What is the equation for the reaction at the negative electrode during the electrolysis of molten sodium chloride?

Back

@@2 ext{Na}^+ + 2 ext{e}^- ightarrow 2 ext{Na}@@.

Front

What happens to ions during electrolysis?

Back

Ions move towards the electrodes where they undergo reduction or oxidation.

Front

What is the significance of the external power source in electrolysis?

Back

An external power source is required to provide the energy needed to drive the non-spontaneous reactions.