Chapter 2 2 Which of the following statements is true about one formula

OBJ: Define ion, cation, and anion. TOP: early atomic theory | chemical substance

71. Which of the following statements is true about one formula unit of SrBr2?

A)

It is composed of one Sr atom and one Br2 molecule.

B)

It is composed of one Sr atom and two Br atoms.

C)

It is composed of one Sr2+ ion and one Br22– ion.

D)

It is composed of one SrBr2 molecule.

E)

It is composed of one Sr2+ ion and two Br– ions.

72. Aluminum(III) sulfite is an ionic compound formed from Al3+ and SO32-. What is the

correct way to represent the formula?

A)

AlSO3+

B)

Al(SO3)2–

C)

Al3+SO32-

D)

Al2(SO3)3

E)

Al7(SO3)10.5

73. Chemical reactions between nonmetals and nonmetals primarily involve

A)

sharing of electrons.

B)

interactions between protons.

C)

transfer of electrons.

D)

interactions among protons, electrons, and neutrons.

E)

interactions between protons and electrons.

74. Which of the following is an ionic compound?

A)

HOClO

B)

NH3

C)

CH3OH

D)

N2O3

E)

NH4CN

75. The formula of water, H2O, suggests

A)

there is twice as much mass of hydrogen as oxygen in each molecule.

B)

there are two oxygen atoms and one hydrogen atom per water molecule.

C)

there is twice as much mass of oxygen as of hydrogen in each molecule.

D)

there are two hydrogen atoms and one oxygen atom per water molecule.

E)

none of these

76. How many oxygen atoms are there in a formula unit of UO2(C2H3O2)2 • NH4C2H3O2 •

4H2O?

A)

4

B)

12

C)

21

D)

8

E)

10

77. What is the ratio of oxygen atoms to hydrogen atoms in the compound

Fe4(PO4)3(OH)3 • 12H2O?

A)

15:3

B)

27:15

C)

27:27

D)

18:27

E)

25:17

78. What is the ratio of oxygen atoms to hydrogen atoms in the mineral carnotite,

K2(UO2)3(VO4)2 • 3H2O?

A)

8:6

B)

8:3

C)

17:3

D)

9:6

E)

17:6

79. Which statement is incorrect concerning the formation of ionic compounds?

A)

Halogens tend to form anions with a charge of –1.

B)

Alkali metals tend to form cations with a charge of +1.

C)

Metals tend to form cations, while nonmetals tend to form anions.

D)

Transition metals tend to form cations with a charge of +3.

E)

Noble gases tend not to form ionic compounds.

KEY: chemical formula | ionic compound MSC: general chemistry

80. The empirical formula of a salt consisting of Sr2+ and NO2– ions is

A)

Sr2+NO2–.

B)

SrNO2.

C)

Sr2NO2.

D)

Sr2(NO2)3.

E)

Sr(NO2)2.

81. Which of the following molecules is a hydrocarbon?

A)

H2O

B)

CH3CH2CH3

C)

C6H12O6

D)

CH3CH2OH

E)

CH3OCH3

82. Which of the following molecules contains the ether functional group?

A)

CH3CH2NH2

B)

CH3CH2OCH2CH3

C)

CH3CH2OH

D)

CH3CH2COOH

E)

H2O

83. Which of the following molecules contains the carboxylic acid functional group?

A)

CH3CH2CH2OH

B)

CH3CH2COCH2CH3

C)

CH3NHCH3

D)

CH3OCH2CH3

E)

CH3CH2CH2COOH

84. Which of the following molecules contains the alcohol functional group?

A)

C6H6

B)

CH3OH

C)

CH4

D)

CH3OCH3

E)

C2H2

85. How many electrons does a barium ion have?

A)

56

B)

8

C)

54

D)

38

E)

2

86. Which of the following statements is false?

A)

A crystal of calcium fluoride has equal numbers of calcium ions and fluoride ions.

B)

A sodium atom is most likely to ionize to form a cation of charge +1.

C)

A sulfide ion has a total of 18 e–.

D)

A potassium ion has a total of 18 e–.

E)

The charge on a neutral chlorine atom is zero.

87. As an ion, sodium has ______ electrons?

A)

24

B)

14

C)

11

D)

28

E)

10

88. How many electrons does a chloride ion have?

A)

17

B)

22

C)

15

D)

18

E)

2

89. Which metals form cations with varying positive charges?

A)

many transition metals

B)

Zn and Al

C)

Group 1 metals

D)

Group 1 and Group 2 metals

E)

Group 2 metals

90. Which of the following represents a known ion?

A)

S2+

B)

Sc4+

C)

Sn2+

D)

P4–

E)

Na–

Test Bank General Chemistry, 10th edition 26

91. The formula for the sulfide ion is

A)

SO42–.

B)

SO32–.

C)

S2O32–.

D)

S2–.

E)

HSO4–.

92. The correct name for Sn2+ is

A)

monotin ion.

B)

tin(II) ion.

C)

tin ion.

D)

tin(I) ion.

E)

tin.

93. The formula of the perchlorate ion is

A)

Cl2O3–.

B)

ClO2–.

C)

CN–.

D)

ClO4–.

E)

ClO–.

94. The name of the SO42– ion is

A)

persulfate.

B)

thiosulfite.

C)

sulfite.

D)

sulfate.

E)

sulfide.

95. The formulas of the nitrite, phosphate, and nitrate ions are represented, respectively, as

A)

N3–, PO33–, NO3–.

B)

NO–, P5–, NO3–.

C)

NO2–, P3–, NO3–.

D)

NO3–, PO2–, N3–.

E)

NO2–, PO43–, NO3–.

96. The formulas of the hydroxide ion, the nitrate ion, and the phosphate ion are represented,

respectively, as

A)

OH–, NO2–, PO33–.

B)

OH–, NO2–, PO43–.

C)

H–, NO2–, P3–.

D)

H–, NO3–, P3–.

E)

OH–, NO3–, PO43–.

97. All the following ions have the same charge except

A)

sulfate.

B)

dichromate.

C)

chlorate.

D)

sulfide.

E)

sulfite.

98. All the following ions have the same charge except

A)

oxide.

B)

monohydrogen phosphate.

C)

peroxide.

D)

permanganate.

E)

oxalate.

99. The formulas of the carbonate ion, the ammonium ion, and the chlorate ion are represented,

respectively, as

A)

CO32–, NH2–, ClO3–.

B)

CO32–, NH4+, ClO3–.

C)

CO2–, NH4+, ClO–.

D)

P3–, NH3+, ClO2–.

E)

CO32–, NH3+, ClO2–.

100. The systematic name for BaH2 is

A)

barium(II) hydrate.

B)

barium hydride.

C)

barium dihydrate.

D)

barium dihydrogen.

E)

barium dihydride.

101. What is the name of the compound whose formula is Al2(SO4)3?

A)

aluminum sulfate

B)

dialuminum tri(sulfur tetraoxygen)

C)

aluminum sulfide

D)

aluminum persulfate

E)

aluminum sulfite

102. The correct name for FeO is

A)

iron(I) oxide.

B)

iron oxide.

C)

iron monoxide.

D)

iron(II) oxide.

E)

iron(III) oxide.

Test Bank General Chemistry, 10th edition 29

103. What is the formula for the chloride of praseodymium(III)?

A)

Pr2(ClO2)3

B)

Pr(ClO4)2

C)

Pr3Cl

D)

PrCl3

E)

Pr(ClO3)3

104. What is the correct formula for bismuth(III) sulfite?

A)

BiSO3

B)

Bi2SO3

C)

Bi3(SO3)2

D)

Bi2(SO3)3

E)

Bi(SO3)2

105. What is the correct name for Sc2O3?

A)

manganese(III) oxide

B)

manganese oxide

C)

dimanganese trioxide

D)

manganese trioxide

E)

dimanganese(II) oxide

106. What is the formula for calcium nitride?

A)

CaNO2

B)

Ca(NO3)2

C)

Ca(NO2)2

D)

Ca3N2

E)

Ca2N3

107. The formula of magnesium sulfide is

Test Bank General Chemistry, 10th edition 30

A)

MgS.

B)

MgSO2.

C)

MgSO4.

D)

MgSO3.

E)

Mg(SO4)2.

108. What is the formula of magnesium nitrite?

A)

Mg(NO2)2

B)

Mg3N2

C)

Mg2(NO2)2

D)

Mg2N3

E)

Mg(NO2)3

109. The formula for aluminum bromide is

A)

AlB.

B)

AlBr.

C)

Al2Br3.

D)

AlBr2.

E)

AlBr3.

110. The chemical formula for iron(III) sulfide is

A)

Fe3(SO4)2.

B)

Fe2S3.

C)

Fe3(SO3)2.

D)

Fe2(SO3)3.

E)

Fe2(SO4)3.

111. The formula for aluminum sulfate is

A)

Al2(SO3)3.

Test Bank General Chemistry, 10th edition 31

B)

Al2S3.

C)

Al2(SO4)3.

D)

Al3S2.

E)

Al3(SO4)2.

112. The formula for copper(II) phosphate is

A)

Co3(PO4)2.

B)

CuPO4.

C)

Co2(PO4)3.

D)

Cu2(PO4)3.

E)

Cu3(PO4)2.

113. Choose the name–formula pair that does not match.

A)

calcium fluoride, CaF2

B)

iron(III) oxide, Fe2O3

C)

aluminum oxide, Al2O3

D)

potassium permanganate, K2MnO4

E)

sodium sulfite, Na2SO3

114. Choose the name–formula pair that does not match.

A)

calcium hydride, CaH2

B)

ammonium hydrogen carbonate, NH4CO3

C)

sodium chlorite, NaClO2

D)

calcium hydroxide, Ca(OH)2

E)

nitric acid, HNO3

115. The formula for aluminum fluoride is

A)

AlF3.

B)

AlF.