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Flashcards in Electrolysis Deck (17):
0

Electricity is..

The flow of electrons

1

Electrolysis is....

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

2

The process of ions becoming neutral

Discharge

3

Cathode

Negative

4

Anode

Positive

5

Water equation for electrolysis

H2O --> H* + OH –

6

Water at anode

4OH– ----> 2H2O + 4e– + O2

7

Water at cathode

2H* + 2e– ---> H2

8

Lowest or highest in reactivity series happens first in electrolysis

Lowest
Sulphate never happens

9

Reactivity series

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

10

Use of Cl2

Sterilising water
Making bleach

11

Use of H2

Fuel
Make margarine

12

Sodium hydroxide (NaOH) use

Make soap
Make bleach
Make paper

13

At the anode: oxidation or reduction

Oxidation

14

What is a faraday

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

15

How many coulombs in a faraday

96 000C

16

Coulombs equation

Q=IT
Coulombs = current (amps) x time (seconds)