C4 electrolysis Flashcards
What is electrolysis?
Electrolysis is a chemical process that uses electricity to break down compounds into their individual elements.
True or False: Electrolysis can only be used to decompose ionic compounds.
True
What are the two electrodes used in electrolysis?
Anode and cathode.
Fill in the blank: The process of electrolysis occurs in a ________ solution.
Electrolyte
What is the role of the anode in electrolysis?
The anode is the positive electrode where oxidation occurs.
What is the role of the cathode in electrolysis?
The cathode is the negative electrode where reduction occurs.
Multiple Choice: Which of the following is a common use of electrolysis? A) Water splitting B) Baking C) Painting D) None of the above
A) Water splitting
What happens to ions in an electrolyte during electrolysis?
Ions move towards the electrodes where they gain or lose electrons.
True or False: During electrolysis, cations move towards the anode.
False
What is produced at the cathode when electrolysis of water occurs?
Hydrogen gas.
What is produced at the anode when electrolysis of water occurs?
Oxygen gas.
Fill in the blank: In electrolysis, the movement of ions creates an ________ current.
Electric
What is the function of a power supply in electrolysis?
To provide the necessary electrical energy to drive the reaction.
Multiple Choice: Which of the following substances can undergo electrolysis? A) NaCl solution B) Sugar solution C) Oil D) None of the above
A) NaCl solution
What is the chemical equation for the electrolysis of water?
2H2O(l) → 2H2(g) + O2(g)
What does PANIC stand for?
Positive Anode Negative is Cathode
what are the cations attracted to?
the cathode
what are the anions attracted to
anode
what is an electrolyte?
liquids and solutions that are able to conduct electricity
what happens to the molten ionic compound in electrolysis?
the compound breakdown
what is the electrode
the rode of metal or graphite through which the electric current flows
why do the electrodes needs to be inert
so they don’t participate in a side reaction with electrolysis
