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Chemistry: A Molecular Approach, 1st Edition
Nivaldo J. Tro
Chapter 4
Chemical
Quantities and
Aqueous
Reactions
The overall equation involved in photosynthesis is:
6 CO2 + 6 H2O  2 C6H12O6 + 6 O2
How many grams of glucose (C6H12O6) form when 4.40 g of
CO2 react?
a)
b)
c)
d)
18.0 g
3.00 g
108 g
0.0167 g
Tro Chemistry: A Molecular Approach
The overall equation involved in photosynthesis is:
6 CO2 + 6 H2O  2 C6H12O6 + 6 O2
How many grams of glucose (C6H12O6) form when 4.40 g of
CO2 react?
a)
b)
c)
d)
18.0 g
3.00 g
108 g
0.0167 g
Tro Chemistry: A Molecular Approach
The rapid decomposition of sodium azide, NaN3, to its
elements is one of the reactions used to inflate airbags:
2 NaN3 (s)  2 Na (s) + 3 N2 (g)
How many grams of N2 are produced from 6.00 g of NaN3
a)
b)
c)
d)
3.88 g
1.72 g
0.138 g
2.59 g
N2
Tro Chemistry: A Molecular Approach
Na
The rapid decomposition of sodium azide, NaN3, to its
elements is one of the reactions used to inflate airbags:
2 NaN3 (s)  2 Na (s) + 3 N2 (g)
How many grams of N2 are produced from 6.00 g of NaN3
a)
b)
c)
d)
3.88 g
1.72 g
0.138 g
2.59 g
N2
Tro Chemistry: A Molecular Approach
Na
Ammonia is produced using the Haber process:
3 H2 + N2  2 NH3
What mass of ammonia could be produced from 15.0 kg
each of H2 and N2? Assume the reaction goes to completion.
a)
b)
c)
d)
e)
18.2 g
9.11 g
1.82 x 104 g
9.11x 103 g
8.45 x 104 g
Tro Chemistry: A Molecular Approach
Ammonia is produced using the Haber process:
3 H2 + N2  2 NH3
What mass of ammonia could be produced from 15.0 kg
each of H2 and N2? Assume the reaction goes to completion.
a)
b)
c)
d)
e)
18.2 g
9.11 g
1.82 x 104 g
9.11x 103 g
8.45 x 104 g
Tro Chemistry: A Molecular Approach
What mass, in grams, of sodium bicarbonate, NaHCO3,
is required to neutralize 1000.0 L of 0.350 M H2SO4?
a)
b)
c)
d)
e)
f)
2.94 x 104
1.47 x 104
5.88 x 104
3.50 x 103
1.75 x 103
7.00 x 103
Tro Chemistry: A Molecular Approach
What mass, in grams, of sodium bicarbonate, NaHCO3,
is required to neutralize 1000.0 L of 0.350 M H2SO4?
a)
b)
c)
d)
e)
f)
2.94 x 104
1.47 x 104
5.88 x 104
3.50 x 103
1.75 x 103
7.00 x 103
Tro Chemistry: A Molecular Approach
Aqueous solutions of which of the following would
conduct electricity?
a) AgNO3
b) C11H22O11 (sucrose: table sugar)
c) CH3CH2OH (ethanol)
d) O2
e) All of the above
f) None of the above
Tro Chemistry: A Molecular Approach
Aqueous solutions of which of the following would
conduct electricity?
a) AgNO3
b) C11H22O11 (sucrose: table sugar)
c) CH3CH2OH (ethanol)
d) O2
e) All of the above
f) None of the above
Tro Chemistry: A Molecular Approach
Sulfuric acid is found in some types of batteries. What
volume of 3.50 M H2SO4 is required to prepare 250.0
mL of 1.25 M H2SO4?
a)
b)
c)
d)
e)
17.5 mL
700. mL
89.3 mL
109 mL
None of the above
Tro Chemistry: A Molecular Approach
Sulfuric acid is found in some types of batteries. What
volume of 3.50 M H2SO4 is required to prepare 250.0
mL of 1.25 M H2SO4?
a)
b)
c)
d)
e)
17.5 mL
700. mL
89.3 mL
109 mL
None of the above
Tro Chemistry: A Molecular Approach
Determine the oxidation number of the red element in
each of the following compounds:
H2PO4–
a)
b)
c)
d)
e)
+6
+5
+5
+5
+6
+6
+2
+4
+4
+4
+4
+4
+4
+8
+4
Tro Chemistry: A Molecular Approach
SO32–
N2O4
Determine the oxidation number of the red element in
each of the following compounds:
H2PO4–
a)
b)
c)
d)
e)
+6
+5
+5
+5
+6
+6
+2
+4
+4
+4
+4
+4
+4
+8
+4
Tro Chemistry: A Molecular Approach
SO32–
N2O4