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WorksheetsRedox
Total questions: 12
Worksheet time: 1hrs 7mins
Name
Class
Date
1.
What reaction occurs at the anode?
a)
Ag+ + e- →Ag
b)
Ag → Ag+ + e-
c)
Ni2+ + 2e- → Ni
d)
Ni → Ni2+ + 2e-
2.
What element is being Oxidized?
a)
N
b)
H
c)
O
d)
S
3.
Reduction happens at the
a)
anode
b)
cathode
c)
salt bridge
d)
voltmeter
4.
This electrode loses mass
a)
anode
b)
cathode
5.
What coefficient would Fe+2 have in the following reaction?
___ Al + ___ Fe+2 → ___ Al+3 + ___ Fe
___ Al + ___ Fe+2 → ___ Al+3 + ___ Fe
a)
1
b)
2
c)
3
d)
6
6.
Is calcium oxidized or reduced in the following reaction?
2 CaO--> 2 Ca + O2
2 CaO--> 2 Ca + O2
a)
Oxidized
b)
Reduced
7.
Which of the following half reactions correctly represents a reduction half reaction?
a)
Fe →Fe2+ + 2e-
b)
Pb4+ + 2e- →Pb2+
c)
2O-2 →O2 + 4e-
d)
Fe + 3e- →Fe3+
8.
Which energy conversion shown below takes place in a voltaic cell?
a)
Electrical to chemical
b)
Mechanical to chemical
c)
Mechanical to electrical
d)
Chemical to electrical
9.
In a voltaic cell the ions flow through the
a)
wire
b)
salt bridge
10.
In a voltaic cell electrons flow
a)
through the salt bridge
b)
from the cathode to the anode through the wire
c)
from the anode to the cathode through the wire
11.
What occurs at the cathode in an electrolytic cell?
a)
oxidation
b)
reduction
12.
Which of the following reactions is balanced by both mass and charge?
a)
Fe+2 + Al →Fe + Al+3
b)
Cu + Fe+2 → Cu+1 + Fe+3
c)
F2 + Br- --> F- + Br2
d)
Fe+2 + 2 Cu --> 2 Cu+ + Fe
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