Understanding Electrolysis

What is the definition of electrolysis?

• Electrolysis is the process of using electricity to cause a chemical change, usually to decompose a substance.

• Electrolysis is the process of heating a substance to change its state.

• Electrolysis is the use of magnets to separate different materials.

• Electrolysis is the method of mixing chemicals to create a reaction.

Name one application of electrolysis in industry.

• Extraction of aluminum

• Production of steel

• Water purification

• Battery charging

What are the main components of an electrolytic cell?

• The main components of an electrolytic cell are the anode, cathode, electrolyte, and external power source.

• Resistor, capacitor, inductor, and transformer

• Electrolyte, power supply, switch, and fuse

• Anode, cathode, resistor, and diode

How does temperature affect the rate of electrolysis?

• Electrolysis only occurs at room temperature.

• Higher temperatures increase the rate of electrolysis.

• Temperature has no effect on the rate of electrolysis.

• Lower temperatures decrease the rate of electrolysis.

What is the electrolysis of water?

• The electrolysis of water is the technique of filtering water to remove impurities.

• The electrolysis of water is the method of mixing water with salt to create a solution.

• The electrolysis of water is the process of boiling water to produce steam.

• The electrolysis of water is the process of using electricity to decompose water into hydrogen and oxygen gas.

State Faraday's first law of electrolysis.

• The mass of a substance is inversely proportional to the electric charge passed.

• The mass of a substance deposited is proportional to the voltage applied.

• The mass of a substance deposited at an electrode is directly proportional to the electric charge passed.

• The total charge is independent of the mass deposited at the electrode.

What is the role of the anode in an electrolytic cell?

• The anode is where oxidation occurs and attracts anions.

• The anode is where reduction occurs and attracts cations.

• The anode is where the electrolyte is stored.

• The anode is the source of electrons in the circuit.

How does the concentration of the electrolyte affect electrolysis?

• Lower electrolyte concentration decreases conductivity and slows down reactions.

• Electrolyte concentration has no effect on the electrolysis process.

• Higher electrolyte concentration increases conductivity and reaction rates in electrolysis.

• Higher electrolyte concentration leads to lower reaction rates and efficiency.

What is the significance of Faraday's second law of electrolysis?

• It quantifies the relationship between electric charge and the amount of substance transformed during electrolysis.

• It states that electrolysis can only occur in liquid solutions.

• It describes the color change during electrolysis.

• It explains the history of electrolysis experiments.

Describe one real-life application of electrolysis in metal plating.

• Electrolysis in battery charging

• Electrolysis for producing hydrogen fuel

• Electroplating of jewelry to enhance appearance and prevent tarnishing.

• Electrolysis for water purification