Electrolysis Flashcards
OIL RIG
Oxidation is loss
reduction is gain
PANIC
positive anode negative is cathode
What cannot conduct electricity in electrolysis?
Solid ionic compounds because they are locked into place by strong electrostatic forces of attraction
What happens when ionic compounds are melted/dissolved in water
The electrostatic forces of attraction are broken meaning the IONS can move
what are electrolytes
The molten or dissolved ionic solution
What might the electrodes be made out of
Graphite/metal and are conductive
What do water molecules ionise into
H+ hydrogen ions
OH- hydroxide ions
What happens if hydrogen is produced at the cathode
It means the metal is more reactive than hydrogen
What happens if an aqueous solution contains halide ions
The halogen will be produced at the anode
Explain electroplating
The process of completing one metal object with another metal.
What are anions
Negatively charged ions
What are cations
Positively charged ions
Why might someone want to electroplate
Aesthetics
Protection
Cheaper costs
where does the metal form and hydrogen
always at the cathode
where does the non metal/ halogen form
always at the anode
