Electrolysis (1)

Question 1

What equipments do we use for electrolysis?

Answer 1

• A beaker where we place the electrolyte
  -Electrodes
• Join the electrodes with a wire so the electron can flow between them
• Add a power supply to drive that flow of electrons

Question 2

What is electrolyte?

Answer 2

A liquid or solution that contains an ionic compound (ions are free to move)

Question 3

What do we do when the compound is soluble?

Answer 3

Dissolve in water (e.g CuSO4 would be our electrolyte)

Question 4

What do we do when the compound is insoluble (e.g Lead Bromide)

Answer 4

We would have to melt it, to get a molten liquid, so the ions are free to move around (eg, the electrolyte for Lead Bromide would consist of Pb2+ ions and Br- ions)

Question 5

What are electrodes?

Answer 5

Solid conductors made of metal or carbon

Question 6

What is the anode and where is it placed?

Answer 6

The anode is the positive electrode and is placed on the right

Question 7

What is the cathode and where is it placed?

Answer 7

The cathode is the negative electrode and is placed on the left

Question 8

What is electrolysis?

Answer 8

The process on which we can separate ionic compounds into their pure elements by using electricity

Question 9

THE NEGATIVE IONS WILL BE ATTRACTED TO THE ANODE (FORMING A GAS), THE NEGATIVE IONS WILL BE ATTRACTED TO THE CATHODE FORMING A SOLID

Answer 9

The ions will discharge

Question 10

AT THE ANODE THE IONS ARE BEING OXIDISED

Answer 10

AT THE CATHODE THE IONS ARE BEING REDUCED

Question 11

THE ELECTRONS FROM THE NEGATIVE IONS ARE BEING PASSED TO THE POSITIVE ANODE, AND THEN BEING TRANSPORTED ALONG THE WIRE AROUND TO THE CATHODE USING THE POWER OF THE BATTERY.

Answer 11

AND THEN THE ELECTRON IS PASSED TO THE POSITIVE ION