WorksheetsAP Electrochemistry
Total questions: 15
Worksheet time: 18mins
In electrolysis (electrolytic cell), particles which move towards cathode are called
anions
cations
photons
positrons
Electrochemical cells convert
mechanical energy in to electrical energy
potential energy in to electrical energy
electrical energy in to chemical energy
chemical energy in to electrical energy
16H+ + 5Fe + 2Mn04- ---> 5Fe2+ + 2Mn2+ + 8H2O
WHICH IS OXIDISED?
MnO4-
Fe
Fe2+
Mn2+
A voltaic cell is established to power a torch, as shown.
For this cell, the overall equation will be
2Al(s)+3H2(g)→2Al3+(aq)+6H+(aq)
3Cl-(aq)+Al(s)→AlCl3(aq)
2Al3+(aq)+3H2(g)→2Al(s)+6H+(aq)
2Al(s)+6H+(aq)→2Al3+(aq)+3H2(g)
A voltaic cell is established to power a torch, as shown.
For this cell, the
electrons will flow from the aluminium to the hydrogen half-cell
aluminium electrode will be the positive anode
concentration of aluminium ions in solution will be falling
hydrogen half-cell will be the negative cathode
In a Galvanic Cell, the cathode is...
positive
negative
In an electrolytic cell, the electrons flow from the...
anode to the cathode
cathode to the anode
In a Voltaic Cell, which half cell is undergoing reduction?
Cu | Cu2+
Zn | Zn2+
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
Given their standard reduction potentials, calculate the cell potential.
Cu2+/Cu = 0.34V
Zn2+/Zn = -0.76V
-1.1 V
1.1 V
0.42 V
-0.42 V
What happens to the mass of a copper electrode in the following reaction?
Zn/Zn2+ // Cu2+/Cu
increases
decreases
remains the same
Write the half - reaction that occurs at the anode?
Ag+/Ag = 0.80V
Ni2+/Ni = -0.25V
Ag+ + e- →Ag
Ag → Ag+ + e-
Ni2+ + 2e- → Ni
Ni → Ni2+ + 2e-
What would be the cell potential of this electrochemical cell?
Ag+/Ag = 0.80V
Ni2+/Ni = -0.25V
1.05V
-1.05V
0.55V
-0.55V
In a Galvanic Cell, the salt bridge...
completes the circuit so that electrons can flow through the wire
maintains charge balance
is soaked in an unreactive electrolyte such as KNO3
all of the above
