Electrolysis Flashcards
What is electrolysis?
Electrolysis is a chemical process that uses electrical energy to drive a non-spontaneous reaction.
True or False: Electrolysis can be used to decompose water into hydrogen and oxygen.
True
Fill in the blank: The process of electrolysis requires the presence of an __________.
electrolyte
What are the two electrodes used in electrolysis called?
Anode and cathode
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.
In electrolysis, what type of reaction occurs at the anode?
Oxidation
In electrolysis, what type of reaction occurs at the cathode?
Reduction
What is the term for the substance that conducts electricity in electrolysis?
Electrolyte
Which gas is produced at the cathode during the electrolysis of water?
Hydrogen
Which gas is produced at the anode during the electrolysis of water?
Oxygen
True or False: Electrolysis can be used for electroplating.
True
What is electroplating?
Electroplating is the process of depositing a layer of metal onto a surface using electrolysis.
What is the purpose of using a direct current in electrolysis?
To provide a constant flow of electrons to facilitate the chemical reactions.
What is Faraday’s first law of electrolysis?
The mass of a substance produced at an electrode during electrolysis is directly proportional to the quantity of electricity passed through the electrolyte.
What is Faraday’s second law of electrolysis?
The mass of a substance produced at an electrode is proportional to its equivalent weight.
Fill in the blank: Electrolysis is commonly used to separate __________ from their ores.
metals
What is a common application of electrolysis in the industry?
Production of aluminum
What does the term ‘electrolytic cell’ refer to?
An electrolytic cell is a setup where electrolysis occurs, consisting of an electrolyte solution and two electrodes.
True or False: The efficiency of electrolysis can be affected by temperature.
True
What is the effect of increasing the concentration of the electrolyte on electrolysis?
It generally increases the conductivity and the rate of electrolysis.
Fill in the blank: The process of electrolysis is essential in the production of __________.
chlorine
What is the significance of using a salt bridge in an electrolytic cell?
A salt bridge maintains electrical neutrality by allowing ion flow between the two half-cells.
What safety precautions should be taken during electrolysis?
Use appropriate personal protective equipment, ensure proper ventilation, and handle chemicals safely.
What is the main disadvantage of electrolysis?
It can be energy-intensive and expensive due to the electricity required.
