Electrorefining and Corrosion

It is the process of purifying a metal by electrolysis

• Electrolysis

• Electroplating

• Electrorefining

• Electrowinning

in Electrorefining, the oxidation process happens at the ______.

• Anode

• Cathode

• Electrolyte

• Salt bridge

in Electrorefining, the reduction process happens at the ______.

• Anode

• Cathode

• Electrolyte

• Salt bridge

What is the charge of the cathode in the electrorefining process?

• Positive

• Negative

• No charge

• Dual Charge

What is the charge of the anode in the electrorefining process?

• Positive

• Negative

• No charge

• Dual Charge

In electrorefining, the impure metal is attached to the _____.

• Battery

• Salt bridge

• Anode

• Cathode

In electrorefining, the pure metal is attached to the _____.

• Battery

• Salt bridge

• Anode

• Cathode

In the electrorefining process of copper, what will happen to the atoms above copper in the standard reduction table?

• They will be reduced first

• They will be oxidized first

• They will be oxidized at the same time with copper

• They will not be oxidized.

In the electrorefining of copper, all atoms BELOW copper should ALL be oxidized first before Copper can get oxidized.

• TRUE

• FALSE

What will happen to the elements above copper during the electrorefining of copper?

• It will remain in the impure copper

• It will fall down and become an anode sludge

• It will fall down and go to the cathode

• It will stick to the anode