Lesson 4.4.3.4
4.4.3.4 Electrolysis of aqueous solutions Quiz: AQA Chemistry, Unit 4
20 questions
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Lesson 4.4.3.4, Electrolysis of aqueous solutions: 20 multiple choice questions for the AQA GCSE Chemistry (8462), Unit 4: Chemical changes, written with Revision Ninja.
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The 20 questions
-
In aqueous electrolysis using inert electrodes, when is hydrogen produced at the cathode?
- A transition metal
- Less reactive than hydrogen
- More reactive than hydrogen
- A group 1 metal only
-
At the anode in aqueous electrolysis, which gas is produced unless halide ions are present?
- Sodium
- Chlorine
- Oxygen
- Hydrogen
-
When halide ions are present, what is produced at the anode?
- The halogen
- Oxygen
- A metal
- Hydrogen
-
Which particles from water are discharged during aqueous electrolysis?
- Ions
- Free radicals
- Whole molecules
- Covalent atoms
-
Aqueous potassium iodide is electrolysed with inert electrodes. What is produced at the anode?
- Oxygen
- Potassium
- Hydrogen
- Iodine
-
Aqueous copper sulfate is electrolysed with inert electrodes. What is produced at the cathode?
- Hydrogen
- Sulfur
- Copper
- Oxygen
-
Concentrated aqueous sodium chloride is electrolysed with inert electrodes. What is produced at the anode?
- Sodium
- Chlorine
- Hydrogen
- Oxygen
-
In aqueous sodium chloride with inert electrodes, what is produced at the cathode?
- Chlorine
- Oxygen
- Sodium
- Hydrogen
-
Which method does required practical 3 use for the investigation?
- Titration
- Calorimetry
- Developing a hypothesis
- Gas volume only
-
Aqueous silver nitrate is electrolysed with inert electrodes. What is produced at the cathode?
- Hydrogen
- Silver
- Oxygen
- Nitrogen
-
Aqueous sodium nitrate is electrolysed with inert electrodes. What is produced at the anode?
- Nitrogen
- Hydrogen
- Oxygen
- Chlorine
-
Aqueous zinc bromide is electrolysed with inert electrodes. Which pair of products forms?
- Oxygen and bromine
- Hydrogen and bromine
- Zinc and bromine
- Zinc and oxygen
-
What happens to the solution near the cathode when hydrogen is produced?
- It becomes alkaline
- It becomes acidic
- It becomes neutral
- It becomes saturated
-
Which ion is discharged at the anode in aqueous electrolysis without halides?
- Hydroxide ion
- Oxide ion
- Sulfate ion
- Hydrogen ion
-
Dilute sulfuric acid is electrolysed with inert electrodes. What is produced at the anode?
- Sulfuric acid
- Oxygen
- Sulfur
- Hydrogen
-
Which electrode produces hydrogen when an aqueous solution of a reactive metal salt is electrolysed?
- Anode
- Both electrodes
- Cathode
- Neither electrode
-
What determines which ions are discharged during aqueous electrolysis?
- Melting point
- Atomic radius
- Relative reactivity
- Relative mass
-
Which product forms at the anode during electrolysis of aqueous copper chloride?
- Chlorine
- Hydrogen
- Oxygen
- Copper
-
Why are inert electrodes used during the electrolysis of aqueous solutions?
- They are very cheap
- They do not react
- They conduct no heat
- They dissolve in water
-
Aqueous potassium bromide is electrolysed with inert electrodes. Which product forms at the anode?
- Hydrogen
- Bromine
- Potassium
- Oxygen
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