Electrochemistry

Question 1

What are the inert 2 rods called?

Answer 1

Electrodes

Question 2

What mnemonic is used to identify the 2 electrode’s charges?

Answer 2

PANIC:”positive is anode and negative is catode”

Question 3

Anions and Cations move to their respective sides,which to either go to?

Answer 3

Anions go to the anode and the cations go to the cathode

Question 4

When electrolysis happens 2 reactions take place,list them

Extra marks if you can say where they happen

Answer 4

Reduction and Oxidation

Reduction happens at the Cathode and Oxidation happens at the Anode

Question 5

In molten electrolytes (the substance thats going to be separeted) where does the metal and non-metal move towards?

Answer 5

At the cathode: The metal
At the anode:the non-metal

Question 6

Whats the most common materials used as inert electrodes?

Answer 6

Platinum and Graphite

Question 7

Why can’t we use any other element/metal as an electrode?
Explain why?

Answer 7

So it doesn’t interfere with the Reduction and Oxidation reaction in the Anode and Cathode.

If we use another element, that element will be reduced or oxidized instead of the real metal/non-metal we are trying to reduce or oxidized

Question 8

What is the use of electroplating

Answer 8

enhance appearance and prevent corrosion

Question 9

If we want to electroplate an object, how do we do it?

Answer 9

1.We replace the Anode with the coating metal and the Cathode with the object.
2.We put them in a special solution
3.The metal will transfer to the object as a coating