Chemistry: Matter and Change

Chapter 19: Redox Reactions

Standardized Test Practice

1
What is the oxidation number of Group 17 nonmetals?

<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/007874637x/514715/fig19_2.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (48.0K)</a>
A)-1
B)0
C)1
D)3
2
Oxidation is __________.
A)the loss of electrons and an increase in charge
B)the loss of electrons and a decrease in charge
C)the gain of electrons and an increase in charge
D)the gain of electrons and a decrease in charge
3
What is the oxidation number of O in Na2SO4?
A)6
B)1
C)2
D)-2
4
In the following reaction, which chemical species is the oxidizing agent?

5H2O2 + 2MnO4- + 6H+ → 2Mn2+ + 8H2O + 5O2
A)H2O2
B)MnO4-
C)H+
D)Mn2+
5
What element is oxidized in the following reaction?

3Cu + 8HNO3 → Cu(NO3)2 + 2NO + 4H2O
A)Cu
B)H
C)N
D)O
6
Group 1A metal ions have an oxidation number of _______.
A)1
B)2
C)3
D)-1
7
What is the oxidation number of magnesium before it is burned in oxygen?

<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/007874637x/514715/fig19_1.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (46.0K)</a>
A)0
B)1
C)2
D)3
8
Which of the elements is the strongest oxidizing agent?

<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/007874637x/514715/fig19_4.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (46.0K)</a>
A)oxygen
B)fluorine
C)chlorine
D)iodine
9
Name the spectator ion in the following equation, including the correct coefficient:

Cu(s) + 4HNO3 (aq) → Cu(NO3)2 (aq) + 2NO2 + 2H2O (l)
A)2NO2
B)3NO2
C)2NO3
D)3NO3
10
Determine the net change in oxidation number of chlorine in the following reaction:

ClO4- (aq) + Br- (aq) → Cl- (aq) + Br2(g) (in acid solution)
A)-8
B)-7
C)7
D)8
11
When the following equation is balanced what is the coefficient of Sn?

Sn + HNO3 → SnO2 + NO2 + H2O
A)1
B)2
C)3
D)4
12
A balanced reaction that shows only the oxidation process is a _________
A)balanced chemical equation
B)single-replacement reaction
C)half-reaction
D)synthesis reaction
13
Complete and balance the following chemical reaction with the smallest set of coefficients. What is the coefficient for iodine in this reaction?

HI + HNO3 → I2 + NO + H2O
A)1
B)2
C)3
D)4
14
Balance the reaction shown. What will be the coefficient of Ag?

Fe + AgNO3 yields Ag + Fe(NO3)3
A)1
B)2
C)3
D)4
15
Which of the following half-reactions represents oxidation?
A)O2 + 4e- → 2O2-
B)Fe3+ + 3e- → Fe
C)Fe → Fe2+ + 2e-
D)Cu2+ + 2e- → Cu
Glencoe Online Learning CenterScience HomeProduct InfoSite MapContact Us

The McGraw-Hill CompaniesGlencoe

Please read our Terms of Use and Privacy Policy before you explore our Web site. To report a technical problem with this Web site, please contact the Web Producer.