Redox
Under what conditions will ionic compounds conduct electricity?
Molten or aqueous
True or false- oxygen is formed at the anode of molten lead bromide
False
Define the term electrolysis?
The process of breakdown of ionic compound in molten or aqueous solution into simpler substances when an electric current is passed through them.
In which equation does electron transfer is shown,
full or half equations?
Half equations
When electrolyzing molten PbBr, bromine gas can be formed at the cathode or anode?
Anode
True or false- metal can only be formed at the cathode during electrolysis.
True
Negative electrode in electrolytic cell
cathode
Give the usual oxidation state of oxygen in a compound
-2
What kind of reaction takes place at the cathode?
reduction
What is attracted to the anode?
anion
Three main components of electrolytic cells.
Power supply
Electrodes
Electrolyte
True or false- Redox reactions must involve transfer of electrons. Other reactions might also involve transfer of electrons.
False- Only redox reactions involve transfer of electrons.
Why does electrolyte conduct electricity
Because it contains free-moving ions
The product at the cathode in electrolysis of molten lead bromide.
Lead
Product at cathode when molten aluminium chloride is electrolysed.
aluminium
What does a rise in oxidation number mean, oxidation or reduction?
Oxidation has occurred
what is the product on anode during electrolysis of molten NaCl?
Cl2
Write the cathodic half equation when molten copper chloride is electrolysed.
Cu2+ +2e- -----> Cu
Continue the cathode reaction:
Pb2+ + 2e- --> ____
Pb