Electrolosis Flashcards
What is electrolysis?
Electrolysis is a chemical process that uses an electric current to drive a non-spontaneous reaction.
True or False: Electrolysis can occur in both molten and aqueous solutions.
True
What are the two electrodes used in electrolysis called?
Anode and cathode
In electrolysis, what is the purpose of the anode?
The anode is the electrode where oxidation occurs.
In electrolysis, what is the purpose of the cathode?
The cathode is the electrode where reduction occurs.
Fill in the blank: During electrolysis of molten ionic compounds, cations move towards the _____ and anions move towards the _____.
cathode, anode
What is produced at the cathode during the electrolysis of molten sodium chloride?
Sodium metal
What is produced at the anode during the electrolysis of molten sodium chloride?
Chlorine gas
In aqueous electrolysis, what additional ions are present that can affect the products?
Water molecules and hydrogen ions
Multiple Choice: Which ion is preferentially discharged at the cathode during the electrolysis of an aqueous solution of sodium chloride? A) Sodium ions B) Hydrogen ions C) Chloride ions
B) Hydrogen ions
What gas is produced at the anode during the electrolysis of an aqueous sodium chloride solution?
Chlorine gas
True or False: The discharge of ions during electrolysis always follows the same pattern regardless of the solution.
False
Fill in the blank: In electrolysis, the _____ is the positive electrode.
anode
Name one factor that determines which ion is discharged during electrolysis.
The position of the ion in the reactivity series or the concentration of the ions.
What is the main difference between electrolysis of molten and aqueous solutions?
In molten electrolysis, only the ions from the compound are present, while in aqueous electrolysis, additional water ions are present.
