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- 1. Multiple Choice
What is a redox reaction?
A reaction where both reactants get reduced.
A reaction where both reactants get oxidized.
A reaction that involves a transfer of electrons between reactants.
A reaction that involves the combustion of at least one reactant.
- 2. Multiple Choice
What is reduction?
It is the gain of electrons.
It is the loss of electrons.
It is the creation of electrons.
It is the destruction of electrons.
- 3. Multiple Choice
What is oxidation?
It is the gain of electrons.
It is the loss of electrons.
It is the creation of electrons.
It is the destruction of electrons.
- 4. Multiple Choice
What is a reducing agent?
It is the species that gets reduced -- gains electrons.
It is the species that gets oxidized -- loses electrons.
It is the species that creates electrons.
It is the species that destroys electrons.
- 5. Multiple Choice
What is an oxidizing agent?
It is the species that gets reduced -- gains electrons.
It is the species that gets oxidized -- loses electrons.
It is the species that creates electrons.
It is the species that loses electrons.
- 6. Multiple Choice
What is a galvanic (voltaic) cell?
It is a cell that destroys electrons on one side and creates electrons on the other side.
It is a cell that contains only one metal bar and one aqueous ion solution.
It is a type of battery that drives a redox reaction when electricity is applied.
It is a type of battery that generates an electrical current from redox reactions.
- 7. Multiple Choice
What is a standard half-cell?
It is one cell that comprises half of a whole battery.
It is a cell containing only a metal bar with no aqueous ion solution.
It is a cell containing only an aqueous ion solution and no metal bar.
It is a cell that generates half of a volt of electricity.
- 8. Multiple Choice
What is a half-reaction?
It is a reaction at equilibrium where half of the substances are reactants and half of the substances are products.
It is the reaction that occurs when the switch of a galvanic cell is open.
It shows EITHER the reduction component or the oxidation component of a redox reaction.
It shows BOTH the reduction and oxidation components of a redox reaction.
- 9. Multiple Choice
What is an anode?
It is the electrode where oxidation takes place.
It is the electrode where reduction takes place.
It is an aqueous solution containing an electrode.
It is the salt bridge that connects half-cells.
- 10. Multiple Choice
What is a cathode?
It is the electrode where oxidation takes place.
It is the electrode where reduction takes place.
It is an aqueous solution containing an electrode.
It is the salt bridge that connects half-cells.
- 11. Multiple Choice
Electrons always flow from
cathode to anode
anode to cathode
- 12. Multiple Choice
Oxidation occurs at the
anode
cathode
- 13. Multiple Choice
Electrons are gained at the
anode
cathode
- 14. Multiple Choice
Given their standard reduction potentials, which of the species is going to be oxidized?
Cu2+/Cu = 0.34V
Zn2+/Zn = -0.76V
Cu
Zn
CuSO4
ZnSO4
- 15. Multiple ChoiceAn iron nail is put into a solution of copper nitrate, iron is above copper in the activity series of metals, what will happen?iron will be reducedbubbles of oxygen gas will form on iron nailthe iron nail will become copper platedno reaction occurs
- 16. Multiple ChoiceIf Al is above Co in the activity series of metals, which of the following will occur if Al metal is put into a solution of cobalt nitrate?a redox reaction takes placethe Al strip dissolvesthe Al strip becomes coated with cobaltall of the above
- 17. Multiple Choice
What occurs to the mass of copper electrode in the following reaction?
Zn/Zn2+ // Cu2+/Cu
increases
decreases
remains the same
- 18. Multiple Choice
Which metal is the negative electrode?
Zn/Zn2+ // Cu2+/Cu
zinc
copper
- 19. Multiple Choice
What reaction occurs at the anode?
Ag+/Ag = 0.80V
Ni2+/Ni = -0.25V
Ag+ + e- →Ag
Ag → Ag+ + e-
Ni2+ + 2e- → Ni
Ni → Ni2+ + 2e-
- 20. Multiple Choice
What would be the theoretical cell potential of the previous electrochemical cell?
Ag+/Ag = 0.80V
Ni2+/Ni = -0.25V
1.05V
-1.05V
0.55V
-0.55V
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