Electrolysis

Question 0

Electrolysis is….

Answer 0

Is a chemical a change caused by passing an electrical current through a compound which is either molten or in solution

Question 1

Electricity is..

Answer 1

The flow of electrons

Question 2

The process of ions becoming neutral

Answer 2

Discharge

Question 3

Cathode

Answer 3

Negative

Question 4

Anode

Answer 4

Positive

Question 5

Water equation for electrolysis

Answer 5

H2O –> H* + OH –

Question 6

Water at anode

Answer 6

4OH– —-> 2H2O + 4e– + O2

Question 7

Water at cathode

Answer 7

2H* + 2e– —> H2

Question 8

Lowest or highest in reactivity series happens first in electrolysis

Answer 8

Lowest

Sulphate never happens

Question 9

Reactivity series

Answer 9

K
An
Ca
Mg
Al
C
Zn
Fe
H
Cu
Ag
Au

Question 10

Use of Cl2

Answer 10

Sterilising water

Making bleach

Question 11

Use of H2

Answer 11

Fuel

Make margarine

Question 12

Sodium hydroxide (NaOH) use

Answer 12

Make soap
Make bleach
Make paper

Question 13

At the anode: oxidation or reduction

Answer 13

Oxidation

Question 14

What is a faraday

Answer 14

The quantity of electricity representing 1 mole of electrons pushing a point in the circuit
1 mole = 1 faraday

Question 15

How many coulombs in a faraday

Answer 15

96 000C

Question 16

Coulombs equation

Answer 16

Q=IT

Coulombs = current (amps) x time (seconds)