Transcript Wednesday, September 5

Homework
Due at the end of the period:
Problems 4-9 on pages 642-643
Homework:
Problems 10-11 on page 643
Homework
4. Determine the oxidation number of
the boldface element in the following
formulas for compounds.
a. NaClO4
Homework
4. Determine the oxidation number of
the boldface element in the following
formulas for compounds.
b. AlPO4
Homework
4. Determine the oxidation number of
the boldface element in the following
formulas for compounds.
c.
HNO2
Homework
5. Determine the oxidation number of
the boldface element in the following
formulas for ions.
a.
+
NH4
Homework
5. Determine the oxidation number of
the boldface element in the following
formulas for ions.
b.
3AsO4
Homework
5. Determine the oxidation number of
the boldface element in the following
formulas for ions.
c.
2CrO4
Homework
6. Describe the process of oxidation and
reduction.
Homework
6. Describe the process of oxidation and
reduction.
LEO says GER
Homework
7. Explain the roles of oxidizing agents
and reducing agents in a redox
reaction. How is each changed in the
reaction?
Oxidizing agents take electrons
Reducing agents give electrons
Oxidizing agents are reduced
Reducing agents are oxidized.
Homework
8. Determine the oxidation number of
the boldface element in the following
formulas for compounds.
a. Sb2O5
Homework
8. Determine the oxidation number of
the boldface element in the following
formulas for compounds.
b. HNO3
Homework
8. Determine the oxidation number of
the boldface element in the following
formulas for compounds.
c. CaN2
Homework
8. Determine the oxidation number of
the boldface element in the following
formulas for compounds.
d. CuWO4
Homework
9. Determine the oxidation number of
the boldface element in these ions.
a. IO4
-
Homework
9. Determine the oxidation number of
the boldface element in these ions.
b.
MnO4
Homework
9. Determine the oxidation number of
the boldface element in these ions.
c. B4O7
2-
Homework
9. Determine the oxidation number of
the boldface element in these ions.
d. NH2
-
Homework
10. Write the equation for the reaction of
iron metal with hydrobromic acid to
form iron(III) bromide and hydrogen
gas. Determine which element is
reduced and which is oxidized in this
reaction.
Homework
10. Write the equation for the reaction of
iron metal with hydrobromic acid to
form iron(III) bromide and hydrogen
gas. Determine which element is
reduced and which is oxidized in this
reaction.
Fe + HBr → Fe(III)Br3 + H2
Homework
10. Write the equation for the reaction of
iron metal with hydrobromic acid to
form iron(III) bromide and hydrogen
gas. Determine which element is
reduced and which is oxidized in this
reaction.
2Fe + 6HBr → 2Fe(III)Br3 + 3H2
Homework
10. Write the equation for the reaction of
iron metal with hydrobromic acid to
form iron(III) bromide and hydrogen
gas. Determine which element is
reduced and which is oxidized in this
reaction.
2Fe + 6HBr → 2Fe(III)Br3 + 3H2
Homework
10. Write the equation for the reaction of
iron metal with hydrobromic acid to
form iron(III) bromide and hydrogen
gas. Determine which element is
reduced and which is oxidized in this
reaction.
2Fe + 6HBr → 2Fe(III)Br3 + 3H2
Homework
11. Alkali metals are strong reducing
agents. Would you predict that their
reducing ability would increase or
decrease as you move down the
family from sodium to francium?
Homework
11. Alkali metals are strong reducing
agents. Would you predict that their
reducing ability would increase or
decrease as you move down the
family from sodium to francium?
Reducing agents give away electrons.