Electrolysis (TOPIC 11)
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Why cant covalent compounds not conduct electricity?
Covalent molecular structures do not conduct electricity because the molecules are neutral and there are no charged particles (no ions or electrons) to move and carry charge.
Why can electrolysis only happen when ionic compounds are liquid?
As the ions are not free to move and carry a charge when solid
What is electrolysis?
Process in which ionic compounds are broken down into their pure elements using electricity
Which electrode do reduction and oxidation occur at?
Oxidation at the anode Reduction at the cathode
What are the rules of (aq) electrolysis at the anode?
If - ion is a halogen then that ion is produced. If it is not in group 7 oxygen is produced
What are the rules of (aq) electrolysis at the cathode?
If the metal is more reactive than hydrogen then hydrogen is produced. If it isn’t more reactive than that metal is produced
If oxygen is a product what is the equation?
4OH- -> 2H2O + O2 + 4e