Show:
Cell
Batteries
Corrosion
Electrolysis
Electroplating, Electrorefining
100
This is the importance of the salt bridge.
What is to allow the flow of ions (anions and cations)?
100
These are the electrodes in a zinc-carbon battery.
What are zinc and carbon?
100
This is how paint / plastic prevents corrosion.
What is it prevents water from touching the iron?
100
This is whether electricity is produced or supplied during electrolysis.
What is supplied?
100
This is why one of the electrodes is the same as the species in solution.
What is so the concentration of the species in solution doesn't change?
200
This is the direction of flow of the electrons?
What is from the anode to the cathode?
200
This is how to recharge a lead-acid battery.
What is force electricity to run through it backwards?
200
This is an example of a sacrificial anode.
What is zinc?
200
These are the products when MnI2 (aq) is electrolysed.
What is I2(s), H2(g), OH-?
200
This is whether the object to be electroplated must be attached at the anode or cathode.
What is the cathode?
300
This is what happens at the anode.
What is oxidation?
300
This is the product from a fuel cell.
What is water?
300
This is what is produced at the oxygen-rich cathode during corrosion.
What is OH-?
300
This is why the impurities in electrorefining such as zinc, which are brought into solution by oxidation, don't plate the cathode.
What is they are brought into solution because they are stronger reducing agents than copper, but this also then means they are weaker oxidizing agents than copper.
400
This is what happens at the cathode.
What is reduction?
400
This is why a zinc-carbon battery has a finite shelf-life.
What is it continues to react even when the electrodes are not attached to a circuit?
400
This is what is produced at the oxygen-poor anode during corrosion.
What is Fe^{2+}?
400
These are the products when H2SO4 (aq) is electrolyzed.
What is H2SO3, O2(g)
400
This is the voltage required for electroplating or electrorefining.
What is 0V?
500
This is the direction of flow of the anions.
What is toward the anode?
500
This is the purpose of the battery paste.
What is to provide ions used in the oxidation and/ or reduction and to allow for ion flow (like the salt bridge)?
500
This is why tin doesn't rust.
What is it forms a protective tin oxide layer?
500
This is the minimum voltage required for the electrolysis of FeCl3 (aq). HINT: First find the strongest oxidizing agent and strongest reducing agent. It's tricky!
What is 0.59V?
500
This is how electrochemistry really works
What is wizardry?