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Chemistry > C2 - Extraction Of Aluminium > Flashcards

C2 - Extraction Of Aluminium Flashcards

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1
Q

What is used to lower the cost of electrolysing aluminium and why?

A

Cryolite - it lowers the temperature.

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2
Q

What are the electrodes made of?

A

Graphite (carbon).

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3
Q

What is formed at the negative electrode during aluminium electrolysis?

A

Aluminium.

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4
Q

What is formed at the positive electrode during aluminium electrolysis?

A

Oxygen.

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5
Q

What also happens at the positive electrode during the electrolysis of magnesium?

A

The oxygen reacts with the carbon electrode to produce CO2.

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6
Q

How is aluminium removed from its ore?

A

Electrolysis.

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Chemistry (26 decks)

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