22 – Investigating with Inert Electrodes (LC 2027) (Leaving Cert Chemistry): Flashcards
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Defining characteristic of inert electrodes
Defining characteristic of inert electrodes
Chemically stable; don't react during electrolysis
Examples of inert electrodes (3)
Examples of inert electrodes (3)
Platinum, carbon, graphite
: volume ratio in water electrolysis
: volume ratio in water electrolysis
2:1
Gas test result for hydrogen
Gas test result for hydrogen
Ignites with a 'pop'
Gas test result for oxygen
Gas test result for oxygen
Relights a glowing splint
Gas test result for chlorine
Gas test result for chlorine
Bleaches moist blue litmus paper
Product at cathode in electrolysis
Product at cathode in electrolysis
Copper metal (brown solid)
Product at anode in electrolysis
Product at anode in electrolysis
Chlorine gas
Colour at anode in KI electrolysis
Colour at anode in KI electrolysis
Brown (iodine forming)
Phenolphthalein pink colour indicates
Phenolphthalein pink colour indicates
ions (alkaline conditions)
CROA: Process at cathode
CROA: Process at cathode
Reduction (electrons gained)
CROA: Process at anode
CROA: Process at anode
Oxidation (electrons lost)
Negative electrode in electrolytic cells
Negative electrode in electrolytic cells
Cathode
Cathode equation for reduction
Cathode equation for reduction
Purpose of acid in water electrolysis
Purpose of acid in water electrolysis
To help water conduct electricity
