Oxidation-Reduction Reactions Chemistry Worksheet Page 30
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41236
Chapter 6
Oxidation-Reduction Reactions
39. Determine the oxidation number for the atoms of each element in the following
O
3
bjeCtive
formulas.
3‒
a. N
c. K
N
3
b. N
O
2
5
40.
Determine the oxidation number for the atoms of each element in the following
O
3
bjeCtive
formulas.
a. ClF
c. H
SO
3
2
4
b. H
O
2
2
41. Determine the oxidation number for the atoms of each element in the following
O
3
bjeCtive
formulas.
a. Co
N
c. NaH
3
2
b. Na
42.
Determine the oxidation number for the atoms of each element in the following
O
3
bjeCtive
formulas.
2‒
2‒
a. HPO
c. N
O
4
2
4
b. NiSO
d. Mn
(PO
)
4
3
4
2
43. Determine the oxidation number for the atoms of each element in the following
O
3
bjeCtive
formulas.
‒
a. HSO
c. Cu
(PO
)
3
3
4
2
b. Cu(NO
)
3
2
44. The following partial reactions represent various means by which bacteria obtain
O
3
bjeCtive
energy. Determine the oxidation number for each atom other than oxygen and
hydrogen atoms, and decide whether the half‑reaction represents oxidation or
reduction. None of the oxygen or hydrogen atoms are oxidized or reduced.
2+
→ Fe
+ energy
2Fe
O
2
3
‒
→ 2NO
+ 3H
O + energy
2NH
3
2
2
‒
‒
+ O
→ 2NO
+ energy
2NO
2
2
3
S → S
+ 8H
O + energy
8H
2
8
2
+
2‒
+ 8H
O → SO
+ 16H
+ energy
S
8
2
4
45.
About 47% of the hydrochloric acid produced in the U.S. is used for cleaning
O
3
bjeCtive
O
4
metallic surfaces. Hydrogen chloride, HCl, which is dissolved in water to make
bjeCtive
O
5
the acid, is formed in the reaction of chlorine gas and hydrogen gas, displayed
bjeCtive
O
6
below. Determine the oxidation number for each atom in the equation, and
bjeCtive
decide whether the reaction is a redox reaction or not. If it is redox, identify
which substance is oxidized, which substance is reduced, the oxidizing agent, and
the reducing agent.
(g) + H
(g) → 2HCl(g)
Cl
2
2
O
3
46. The following equation describes the reaction that produces hydrofluoric acid,
bjeCtive
O
4
which is used to make chlorofluorocarbons (CFCs). Determine the oxidation
bjeCtive
O
5
number for each atom in the equation, and decide whether the reaction is a
bjeCtive
O
6
redox reaction or not. If it is redox, identify which substance is oxidized, which
bjeCtive
substance is reduced, the oxidizing agent, and the reducing agent.
+ H
→ 2HF + CaSO
CaF
SO
2
2
4
4
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