HomeworkDue at the end of the period:Problems 4-9 on pages 642-643

Homework:Problems 10-11 on page 643

Homework4. Determine the oxidation number of

the boldface element in the following formulas for compounds.

a. NaClO4

Homework4. Determine the oxidation number of the boldface element in the following formulas for compounds.

b. AlPO4

Homework4. Determine the oxidation number of the boldface element in the following formulas for compounds.

c. HNO2

Homework5. Determine the oxidation number of the boldface element in the following formulas for ions.

a. NH4+

Homework5. Determine the oxidation number of the boldface element in the following formulas for ions.

b. AsO43-

Homework5. Determine the oxidation number of the boldface element in the following formulas for ions.

c. CrO42-

Homework6. Describe the process of oxidation and

reduction.

Homework6. Describe the process of oxidation and

reduction.

LEO says GER

Homework7. Explain the roles of oxidizing agents

and reducing agents in a redox reaction. How is each changed in the reaction?

Oxidizing agents take electronsReducing agents give electronsOxidizing agents are reducedReducing agents are oxidized.

Homework8. Determine the oxidation number of

the boldface element in the following formulas for compounds.

a. Sb2O5

Homework8. Determine the oxidation number of

the boldface element in the following formulas for compounds.

b. HNO3

Homework8. Determine the oxidation number of

the boldface element in the following formulas for compounds.

c.CaN2

Homework8. Determine the oxidation number of

the boldface element in the following formulas for compounds.

d. CuWO4

Homework9. Determine the oxidation number of

the boldface element in these ions.

a. IO4-

Homework9. Determine the oxidation number of

the boldface element in these ions.

b. MnO4-

Homework9. Determine the oxidation number of

the boldface element in these ions.

c.B4O72-

Homework9. Determine the oxidation number of

the boldface element in these ions.

d. NH2-

Homework10. 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.

Homework10. 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

Homework10. 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

Homework10. 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

Homework10. 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

Homework11. 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?

Homework11. 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.