Have an account?
Skip to Content
Build your own quiz
Suggestions for you
20 questions
Show Answers
See Preview
- 1. Multiple ChoiceWhat is an ore?a solid metala rock cantaining a metal combined with other elementsan elementan object used to row a boat
- 2. Multiple ChoiceWhat is the name of the positive electrode?cathodeanode
- 3. Multiple ChoiceWhat is the name of the negative electrode?cathodeanode
- 4. Multiple ChoiceThe negatively charged ions migrate toward the ________.anodecathode
- 5. Multiple ChoiceThe negatively charged ions migrate toward the ________.anodecathode
- 6. Multiple Choice
What is the ore of aluminium called?
Baxite
Bauxite
Cryolite
Malachite
- 7. Multiple Choice
The electrodes in electrolysis of aluminium are made of
Steel
Anodes
Graphite
Plastic
- 8. Multiple Choice
What do you add to aluminium ore to reduce its melting temperature?
Dendrite
Malachite
Bauxite
Cryolite
- 9. Multiple ChoiceWhat is electrolysis?breaking down of a compound using a currentmaking a compound using a current
- 10. Multiple ChoiceWhen NaCl solution is electrolysed what has forms at the anode?HydrogenOxygenChlorineSodium
- 11. Multiple ChoiceWhat is the equation to show what happens to Cl ions at the anode.Cl- --> Cl + e-2Cl- --> Cl2 + 2e-Cl2 + 2e- 2Cl-Cl2 + 2e- --> 2Cl-
- 12. Multiple Choice
The diagram shows the electrolysis of lead(II) bromide using inert electrodes. Why does the bulb only light up when the lead(II) bromide is melted?
Bromine atoms in lead(II) bromide are converted to ions when it is melted
Electrons flow through the lead(II) bromide when it is melted
The ions in lead(II) bromide are mobile charge carriers in the molten state.
There are no ions in solid lead(II) bromide
- 13. Multiple Choice
In electrolytic cell that uses aqueous copper(II) sulfate as electrolyte and copper plates as electrodes, what is the product at the anode?
Oxygen gas and water
Copper metal
Copper(II) ions
Hydrogen gas
- 14. Multiple Choice
Anions get discharged by ________ electrons at the ___________
gaining, cathode
losing, anode
gaining, anode
losing, cathode
- 15. Multiple Choice
What is the gas produced at the anode during the electrolysis of very dilute hydrochloric acid?
water
oxygen
hydrogen
chlorine
- 16. Multiple Choice
Choose the half-equation that shows the discharge of aluminium ion.
Al3+ - 3e- --> Al
Al2+ + 3e- --> Al
Al3+ + 3e- --> Al
Al3+ --> Al + 3e-
- 17. Multiple Choice
What is the half-equation for the discharge of hydroxide ions?
2O2- --> O2 + 4e-
OH- --> OH + e
4OH- --> 2H2O + O2 + 4e-
2H2O + O2 + 4e- --> 4OH-
- 18. Multiple Choice
What factors do not affect the products of electrolysis in the electrolysis of aqueous magnesium chloride using graphite electrodes?
position of ions in the electrochemical series
concentration of ions in the solution
type of electrodes
- 19. Multiple Choice
What ions are present in molten aluminium oxide?
Al3+, O2-, H+, OH-
Al3+, O2-
Al3+, OH-
- 20. Multiple Choice
If the fork is to be electroplated with silver metal, what electrolyte should be used?
Molten silver chloride
Aqueous silver nitrate
Sodium chloride solution
Copper(II) sulphate solution
- Answer choicesTagsAnswer choicesTags