Electrochemistry
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Electrolysis of molten compounds
SubtopicElectrolysis of molten compounds under Electrochemistry for Grade 11 IGCSE.
Preview questions (no answers)
- 1.
What happens to the metal ions during the electrolysis of a molten metal halide?
A.They are attracted to the cathode where they gain electrons.
B.They are attracted to the anode where they lose electrons.
C.They stay in the molten liquid and do not react.
D.They move towards the positive electrode to be oxidized.
- 2.
During the electrolysis of molten lead(II) bromide (), what is observed at the anode?
A.A silvery liquid metal forms.
B.A colorless, odorless gas is evolved.
C.Reddish-brown pungent fumes are evolved.
D.The electrode increases in mass without gas evolution.
- 3.
In the electrolysis cell shown in the diagram, what is the correct label for electrode B if it is connected to the negative terminal of the power supply?
A.Anode
B.Cathode
C.Electrolyte
D.Anion
Download the worksheet for Electrochemistry - Electrolysis of molten compounds to practice offline. It includes additional chapter-level practice questions.
Electrolysis of aqueous solutions
SubtopicElectrolysis of aqueous solutions under Electrochemistry for Grade 11 IGCSE.
Preview questions (no answers)
- 1.
During the electrolysis of any aqueous solution, what chemical process always occurs at the cathode?
A.Oxidation
B.Reduction
C.Neutralization
D.Displacement
- 2.
Which of the following best defines an electrolyte?
A.A solid metal that allows electrons to flow through it
B.A substance that conducts electricity in the solid state
C.A compound that conducts electricity when molten or in aqueous solution and is chemically decomposed
D.A non-metal liquid that conducts electricity without changing chemically
- 3.
When dilute sulfuric acid, , is electrolyzed using inert carbon electrodes, which gas is released at the anode?
A.Hydrogen
B.Sulfur dioxide
C.Oxygen
D.Hydrogen sulfide
Download the worksheet for Electrochemistry - Electrolysis of aqueous solutions to practice offline. It includes additional chapter-level practice questions.
Electroplating
SubtopicElectroplating under Electrochemistry for Grade 11 IGCSE.
Preview questions (no answers)
- 1.
During the electroplating of a nickel spoon with gold, what happens to the gold ions () in the solution?
A.They are oxidized at the anode
B.They are reduced to gold atoms at the cathode
C.They react with the nickel to form an alloy
D.They remain unchanged in the solution
- 2.
A student wants to plate a copper coin with silver. Which combination of anode and electrolyte should be used?
A.Anode: Silver; Electrolyte: Copper(II) sulfate
B.Anode: Copper; Electrolyte: Silver nitrate
C.Anode: Silver; Electrolyte: Silver nitrate
D.Anode: Platinum; Electrolyte: Copper(II) chloride
- 3.
In an electroplating experiment, where should the object to be plated be placed in the electrolytic cell?
A.At the cathode (negative electrode)
B.At the anode (positive electrode)
C.Suspended in the middle of the electrolyte without connection
D.Connected to the positive terminal of the battery
Download the worksheet for Electrochemistry - Electroplating to practice offline. It includes additional chapter-level practice questions.
Hydrogen fuel cells
SubtopicHydrogen fuel cells under Electrochemistry for Grade 11 IGCSE.
Preview questions (no answers)
- 1.
Which of the following represents the overall balanced chemical equation for the reaction occurring in a hydrogen fuel cell?
A.B.C.D. - 2.
At which electrode is hydrogen gas supplied in a fuel cell?
A.The Anode (negative electrode)
B.The Cathode (positive electrode)
C.The Electrolyte
D.The Salt Bridge
- 3.
In a hydrogen fuel cell, what type of energy conversion takes place?
A.Thermal energy to chemical energy
B.Chemical energy to electrical energy
C.Electrical energy to chemical energy
D.Kinetic energy to electrical energy
Download the worksheet for Electrochemistry - Hydrogen fuel cells to practice offline. It includes additional chapter-level practice questions.