Please enable JavaScript.
Coggle requires JavaScript to display documents.
C6 Electrolysis - Coggle Diagram
C6 Electrolysis
The process of electrolysis
what happens during electrolysis?
what type of substances can be electrolysed?
what are the products of electrolysis
Electrolysis of
aqueous solutions
how are the ions discharged when an aqueous solution is electrolysed using
inert electrodes?
at the negative electrode (cathode), what is produced if the metal is more reactive than hydrogen?
at the positive electrode (anode), what is produced unless the solution contains halide ions when the halogen is produced?
why does this happen?
Required practical activity 9
: investigate what happens when aqueous solutions are electrolysed using inert electrodes
eg electrolysis of brine (sodium chloride solution)
method
half equation for the cathode
half equation for the anode
how do you test for any gases formed?
Using electrolysis to
extract metals
when would electrolysis be used to extract a metal?
what are the disadvantages of using electrolysis?
eg aluminium is manufactured by the electrolysis of a molten mixture of aluminium oxide and cryolite using carbon as the positive electrode (anode)
explain why a mixture is used as the electrolyte
explain why the positive electrode must be continually replaced
half equation for the cathode
half equation for the anode
Electrolysis of
molten ionic compounds
eg lead bromide
which ion will go to which electrode?
half equation for the cathode
half equation for the anode
