Using Electrolysis to extract metals

0.0(0)
studied byStudied by 0 people
learnLearn
examPractice Test
spaced repetitionSpaced Repetition
heart puzzleMatch
flashcardsFlashcards
Card Sorting

1/6

encourage image

There's no tags or description

Looks like no tags are added yet.

Study Analytics
Name
Mastery
Learn
Test
Matching
Spaced

No study sessions yet.

7 Terms

1
New cards

When is electrolysis used to extract metals?

For metals more reactive than carbon (e.g. aluminium).

2
New cards

Why can't carbon be used for highly reactive metals?

Carbon can't displace them.

3
New cards

What ore is used for aluminium extraction?

Bauxite (contains aluminium oxide).

4
New cards

Why is cryolite used in electrolysis of aluminium?

Lowers the melting point of aluminium oxide to save energy.

5
New cards

What is the cathode reaction in aluminium extraction?

Al³⁺ + 3e⁻ → Al (reduction).

6
New cards

What is the anode reaction in aluminium extraction?

O²⁻ → O₂ + 4e⁻ (oxidation).

7
New cards

Why must the anode be replaced?

It reacts with oxygen to form CO₂.