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- 1. Multiple Choice
What happens at the positive electrode in a voltaic cell and in an electrolytic cell?ABCD - 2. Multiple ChoiceWhat are produced at positive/negative electrodes during electrolysis of molten NaCI?ABCD
- 3. Multiple ChoiceWhich factors affect amount of metal formed during electrolysis?I and III and IIIII and IIII, II and III
- 4. Multiple ChoiceWhat occurs during electrolysis of a molten salt?Electricity is produced by a spontaneous redox reactionElectricity cause a non-spontaneous redox reaction to occurElectrons flow through the molten saltElectrons are removed from both ions of the molten salt
- 5. Multiple ChoiceObject is electroplated with copper using copper(II) sulfate. Which statement is correct?Positive electrode increases in massConcentration of Cu2+ ions in solution decreasesReduction occurs at positive electrodeReaction at negative electrode is Cu2+ + 2e– → Cu
- 6. Multiple ChoiceThe ease of discharge of metal ions decreases down the electrochemical series.TrueFalse
- 7. Multiple Choice
What is the name of the positive electrode in an electrolytic cell?
cathode
anode
- 8. Multiple Choice
What is the name of the negative electrode in an electrolytic cell ?
cathode
anode
- 9. Multiple ChoiceThe electrode connected to the positive terminal of a battery is __________.cathodeanode
- 10. Multiple ChoiceAnion loses electrons at thecathodeanode
- 11. Multiple ChoiceReduction occurs at theanodecathode
- 12. Multiple ChoiceWhat kind of Electrical Current does Electroysis require?DirectIndirectAnternativeA alternating
- 13. Multiple ChoiceWhat is electrolysis?breaking down of a compound using a currentmaking a compound using a current
- 14. Multiple ChoiceExplain why the electrolyte has to be a liquid.So the ions can moveSo the electrons can moveSo that it doesn't get too hotSo the fish are ok
- 15. Multiple ChoiceWhat happens at the positive electrode?Positive non-metal ions are attractedPositive metal ions are attractedNegative non-metal ions are attractedNegative metal ions are attracted
- 16. Multiple ChoiceWhen NaCl solution is electrolysed what has forms at the anode?HydrogenOxygenChlorineSodium
- 17. Multiple ChoiceComplete the half equation Al3+ -->Al3+ - 3e- --> AlAl2+ + 3e- --> AlAl3+ + 3e- --> AlAl3+ --> Al + 3e-
- 18. Multiple ChoiceWhat is the name given to the solution that is being electrolysed?Salt solutionElectric solutionMineral solutionElectrolyte
- 19. Multiple ChoiceDescribe oxidation in terms of electronsoxidation is gain of electronsoxidation is loss of electrons
- 20. Multiple ChoiceWhat is an electrolytic cell?a cell that converts chemical energy into electrical energya cell that converts electrical energy into electrical energya cell that converts electrical energy into chemical energyA cell that converts kinetic energy into potential energy.
- 21. Multiple Choice
What does electrolysis mean?
electric splitting
electric combining
proton splitting
proton combining
- 22. Multiple Choice7. How do you test for Hydrogen gas?a) Lime water goes milky/cloudyb) Relights a glowing splintc) Lighted splint gives a squeaky pop.d) Bleaches damp indicator paper.
- 23. Multiple Choice6. How do you test for Oxygen gas?a) Lime water goes milky/cloudyb) Relights a glowing splintc) Lighted splint gives a squeaky pop.d) Bleaches damp indicator paper.
- 24. Multiple Choice
What would molten potassium bromide break down into?
Potassium and bromide
Potassium and bromine
Just potassium
Just bromine
Just bromide
- 25. Multiple ChoiceWhen NaCl solution is electrolysed what has forms at the anode?HydrogenOxygenChlorineSodium
- Answer choicesTagsAnswer choicesTags