Page 344
Chapter 19: Electrochemistry
NOTE:
A table of standard reduction potentials is required to work many of these problems.
1. Complete and balance the following redox equation.
When properly balanced using the
smallest whole-number coefficients, the coefficient of S is
H
2
S + HNO
3
→
S + NO
(acidic solution)
A)
1
B)
2
C)
3
D)
5
E)
6
Ans:
C
Category:
Medium
Section:
19.1
2. Complete and balance the following redox equation using the smallest whole-number
coefficients.
What is the coefficient of Sn in the balanced equation?
Sn + HNO
3
→
SnO
2
+ NO
2
+ H
2
O
(acidic solution)
A)
1
B)
2
C)
3
D)
4
E)
5
Ans:
A
Category:
Medium
Section:
19.1
3. Complete and balance the following redox equation.
What is the coefficient of H
2
O
when the equation is balanced using the set of smallest whole-number coefficients?
MnO
4
–
+ SO
3
2–
→
Mn
2+
+ SO
4
2–
(acidic solution)
4. Complete and balance the following redox equation.
What is the coefficient of H
2
S when
the equation is balanced using the set of smallest whole-number coefficients?
H
2
S + MnO
4
–
→
Mn
2+
+ SO
4
2–
(acidic solution)
5. Complete and balance the following redox equation.
What is the coefficient of H
2
O
when the equation is balanced with the set of smallest whole-number coefficients?
H
2
O + MnO
4
–
+ I
–
→
MnO
2
+ IO
3
–
(basic solution)
6. Complete and balance the following redox equation.
What is the coefficient of OH
–
when
the equation is balanced using the set of smallest whole-number coefficients?
MnO
4
–
+ I
–
→
MnO
2
+ IO
3
–
(basic solution)
A)
1
B)
2
C) 4
D)
10
E)
None of these.
Ans:
B
Category:
Medium
Section:
19.1

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