WorksheetsVoltaic Cells
Total questions: 15
Worksheet time: 15mins
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.
Which of the following reactions would be spontaneous?
3Ag + Al3+ --> 3Ag+ + Al
Pb + Cr2+ --> Pb2+ + Cr
Ni2+ + Zn --> Zn2+ + Ni
Cd + 2Na+ --> 2Na + Cd2+
Which of the following reactions is spontaneous?
Cu + Cd2+ --> Cu2+ + Cd
Fe2+ + Cr --> Cr2+ + Fe
Ni + Mg2+ --> Mg + Ni2+
Al + 3Li+ --> 3Li + Al3+
Which of the following correctly describes the processes that occur at the anode and cathode in a voltaic cell?
oxidation at both the anode and the cathode
oxidation at the cathode, reduction at the anode
oxidation at the anode, reduction at the cathode
reduction at both the anode and the cathode
Which answer choice correctly describes the flow of electrons in a voltaic cell?
electrons flow from the anode to the cathode through the salt bridge
electrons flow from the cathode to the anode through the salt bridge
electrons flow from the anode to the cathode through the wire
electrons flow from the cathode to the anode through the wire
What is the purpose of the salt bridge in a voltaic cell?
Permits the exchange of water between the two half cells
Permits the exchange of atoms between the two half cells
Permits the exchange of electrons between the two half cells
Permits the exchange of ions between the two half cells
Which of the following energy conversions occurs in a voltaic cell?
electrical to nuclear
electrical to chemical
chemical to electrical
nuclear to electrical
Which of the following describes the redox reaction that occurs in a voltaic cell?
spontaneous
nonspontaneous
could be either spontaneous or nonspontaneous
If the two electrodes in a voltaic cell are Mg and Zn, which will be oxidized?
Zn
Mg
This electrode in a voltaic cell gains mass
Anode
Cathode
What is the primary function of a voltaic cell?
To convert chemical energy into electrical energy
To convert electrical energy into chemical energy
To store electrical energy
To produce heat energy
In a voltaic cell, which component allows ions to flow between the two half-cells?
Electrode
Salt bridge
Wire
Voltmeter
Which of the following reactions occurs at the anode in a voltaic cell?
Reduction
Oxidation
Neutralization
Precipitation
What is the role of the salt bridge in a voltaic cell?
To prevent the mixing of different solutions
To allow the flow of electrons between electrodes
To maintain electrical neutrality by allowing ion flow
To increase the voltage of the cell
Which of the following metals, when used as an electrode in a voltaic cell, will be oxidized if paired with copper?
Zinc
Silver
Gold
Platinum
