Section 17.1
Electrolysis: Chemistry from Electricity
Practice Test
1.
A process in which electricity causes a nonspontaneous chemical reaction is called _________________.
a.
electrolysis
b.
hydrolysis
c.
photogenesis
d.
synthesis
Hint
2.
This reaction occurs at the anode of an electrolytic cell.
a.
oxidation
b.
redox
c.
reduction
d.
synthesis
Hint
3.
This reaction occurs at the cathode of an electrolytic cell.
a.
decomposition
b.
oxidation
c.
redox
d.
reduction
Hint
4.
_____________ forms at the cathode of a Downs cell.
a.
Chlorine gas
b.
Hydrogen gas
c.
Liquid sodium
d.
Oxygen gas
Hint
5.
The cation in an aqueous rubidium chromate solution is ___________.
a.
Cr
3+
b.
CrO
4
-
c.
Rb
+
d.
Rb
2+
Hint
6.
The anion in an aqueous ammonium nitrate solution is ___________.
a.
NO
3
-
b.
NH
4
+
c.
N
3
-
d.
O
2-
Hint
7.
A Hall-Heroult electrolytic cell is used to produce _________________.
a.
aluminum metal
b.
chlorine gas
c.
molten iron
d.
sodium metal
Hint
8.
The Hall-Heroult process is expensive because it consumes so much ______________.
a.
chlorine
b.
electricity
c.
oxygen
d.
steel
Hint
9.
To prevent corrosion, metal garbage cans and other iron objects are dipped into _____________.
a.
hydrochloric acid
b.
hydrogen peroxide
c.
liquid oxygen
d.
molten zinc
Hint
10.
If you wanted to electroplate a metal object with silver, you would use silver as the ________________.
a.
anode
b.
battery
c.
cathode
d.
metal to be plated
Hint
11.
This element is sometimes electroplated onto other metals to make them shiny and to improve their hardness, stability, and appearance.
a.
chromium
b.
magnesium
c.
sodium
d.
zinc
Hint
12.
This reaction takes place at the cathode during the electrolysis of molten magnesium chloride.
a.
Mg
2+
+ 2e
-
Mg
b.
2Cl
-
Cl
2
+ 2e
-
c.
Mg
Mg
2+
+ 2e
-
d.
Cl
2
+ 2e
-
2Cl
-
Hint
13.
What is the cathode in the electrolytic cell used for silver plating?
a.
the electrolyte solution
b.
the object to be plated
c.
the power source
d.
the silver metal source
Hint
