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Electrolysis notes

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Neatly summarized notes of the IEB Chemistry notes. Simple explanations with images of Electrolytic cells, electrolytic reactions, chlor-alkali industry etc. Images and annotations to help in understanding. Easy to read. For grade 10 to 12 Chemistry at school.

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  • November 13, 2024
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  • 2024/2025
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ELECTROLYTIC CELLS


ELECTROLYSIS

The decomposition of a substance caused by the passage of an electric
current



ELECTROLYTE

A substance that can conduct electricity by forming free ions when molten
or dissolved in solution

CATHODE

Reduction occurs Joined to the negative
terminal of the battery


ANODE


Oxidation occurs Joined to the positive
terminal of the battery

Endothermic
Electrolytic cells use an external source of direct current to drive reactions
that are non-spontaneous



reverse CATHODE
c rule reduction




oxidation
ANODE

, Battery

Maintains flow of electrons
POSITIVE
NEGATIVE
electrode (anode)
electrode (cathode) for




Positive ions: Negative ions:
Gain electrons y Lose electrons
Reduced Oxidized
Cations Anions




I Electrolyte
Ionic compound molten or
dissolved

ELECTROLYTIC CELLS GALVANIC CELLS
 Needs a battery  Is the battery
 Converts electrical energy to  Converts chemical energy to
chemical energy electrical energy
 Non-spontaneous reactions  Spontaneous reaction
 Endothermic  Exothermic
 Anode = positive  Anode = negative
Cathode = negative Cathode = positive
 One container  Two containers
 No salt bridge  Has a salt bridge

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