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5) Hydrogen can have oxidation states of ________.
A) +1 only
B) -1, 0, and +1
C) 0 and +1 only
D) -1 and +1 only
E) 0 only
6) ________ has the lowest boiling point of any substance known.
A) Ne
B) He
C) Ar
D) Kr
E) Rn
7) The electron-pair geometry and molecular geometry of XeF2 are ________ and ________, respectively.
A) trigonal bipyramidal; bent
B) trigonal bipyramidal; linear
C) trigonal bipyramidal; bent
D) octahedral; linear
E) octahedral; bent
8) Hybridization of Xe in XeF4 is ________ and in XeF2 is ________.
A) sp3d2, sp3d2
B) sp3d, sp3d2
C) sp3d2, sp3d
D) sp3, sp3d
E) sp3, sp3d2
9) The number of electrons in the valence shell of Xe in XeF6 is ________
A) 10
B) 12
C) 14
D) 6
E) 8
10) What is the oxidation state of xenon in XeO2F2?
A) 0
B) +4
C) +8
D) +2
E) +6
11) What is the oxidation state of xenon in XeO4?
A) +8
B) +6
C) +4
D) +2
E) 0
12) Br2 can be prepared by combining NaBr with ________.
A) Cl2
B) HBr
C) HCl
D) NaCl
E) I2
13) The active ingredient in many liquid bleaches is ________.
A) NaCl
B) NaClO
C) NaClO2
D) NaClO3
E) NaClO4
14) Which halogen can react with fluorine to form the compound XF7?
A) bromine
B) fluorine
C) chlorine
D) iodine
E) astatine
15) Which halogen forms an oxyacid with the formula HXO2?
A) bromine
B) fluorine
C) chlorine
D) iodine
E) astatine
16) The primary commercial use of oxygen is ________.
A) for the treatment of respiratory distress
B) in oxyacetylene welding
C) as a household bleach
D) as an oxidizing agent
E) to charge oxygen-containing cylinders used by deep-sea divers
17) Only the most active metals react with oxygen to form ________.
A) oxides
B) superoxides
C) peroxides
D) ozonides
E) water
18) The dissolution of 1.0 mol of ________ to 1.0 L of water at 25 °C would yield the most acidic solution.
A) SO3
B) CO2
C) CO
D) MgO
E) CaO
19) The nitride ion is a strong Br∅nsted-Lowry base. Mg3N2 reacts with water to produce ________.
A) N2
B) N2O
C) NO
D) NO2
E) NH3
20) The primary commercial use of elemental nitrogen is in the manufacture of ________.
A) plastics
B) explosives
C) nitrogen-containing fertilizers
D) rubber
E) chlorine bleach
25
21) What is the coefficient of NO2 when the following disproportionation reaction is balanced?
NO2 (g) + H2O (l) → H+ (aq) + NO3- (aq) + NO (g)
A) 1
B) 2
C) 3
D) 5
E) 4
22) The Haber process is used to make ________ from ________.
A) HNO3, N2
B) O2, KClO3
C) NH3, N2
D) NO2, O2
E) NO, N2
23) Most mined phosphate rock is ________.
A) used as a strong acid
B) used as a reducing agent
C) used as a detergent
D) converted to fertilizer
E) discarded as a by-product
24) The white allotropic form of ________ bursts into flame when exposed to air.
A) phosphorus
B) carbon
C) sulfur
D) selenium
E) oxygen
25) The two allotropic forms of phosphorus are ________ and ________.
A) black, red
B) white, black
C) white, yellow
D) white, red
E) black, yellow
26) The principal combustion products of compounds containing carbon and hydrogen in the presence of
excess O2 are ________.
A) CO2 and H2O
B) CO2 and H2O2
C) CO2 and H
D) C(graphite) and H2
E) CO2 and H2
27) ________ is formed when wood is heated strongly in the absence of air.
A) Buckminsterfullerene
B) Carbon black
C) Sulfur dioxide
D) Coke
E) Charcoal
28) To produce carbon black, ________.
A) diamond is exposed to extremely high pressures and temperatures
B) wood is strongly heated in the absence of oxygen
C) coal is strongly heated in the absence of oxygen
D) hydrocarbons such as methane are heated in a very limited supply of oxygen
E) graphite is cooled to -273 °C
29) Although CaCO3 is essentially insoluble in pure water, it dissolves slowly in acidic ground water due
to formation of ________.
A) insoluble Ca(OH)2
B) soluble Ca(OH)2
C) insoluble Ca(HCO3)2
D) soluble Ca(HCO3)2
E) soluble CaO
30) The compound whose formula is CaC2 is ________.
A) calcium carbide
B) carborundum
C) carbon calcide
D) calcium dicarbon
E) limestone
31) An example of a form of pure carbon that contains only sp3 hybridized carbon atoms is ________.
A) diamond
B) charcoal
C) graphite
D) carbon black
E) carborundum
32) What is the oxidation state of carbon in the carbonate ion?
A) +4
B) +2
C) 0
D) -2
E) -4
33) The correct name of H2CO3 is ________.
A) hydrogen carbide
B) hydrogen carbonate ion
C) carbonate ion
D) carbonic acid
E) carboxylic acid
34) The most common oxidation state of silicon is ________.
A) -4
B) +2
C) +6
D) -2
E) +4
35) Pyrex® glass is formed by adding an oxide of ________ to soda-lime glass.
A) lead
B) cobalt
C) boron
D) silver
E) phosphorous
36) SiO44- is the ________ ion.
A) orthosilicate ion
B) silicide ion
C) thiosilicate ion
D) silicon tetroxide ion
E) siliconate ion
29
37) The oxidation state of silicon in SiO44- is ________.
A) 0
B) +6
C) +2
D) +4
E) -4
38) The disilicate ion is ________.
A) Si2O88-
B) Si2O76-
C) Si2O84-
D) Si2O86-
E) Si2O72-
39) Glass is ________ whereas quartz is ________.
A) hard, soft
B) crystalline, amorphous
C) amorphous, crystalline
D) pure SiO2, a mixture of SiO2 and carbonates
E) breakable, not breakable
40) What is the formula of borax?
A) H3BO3
B) H2B4O7
C) P5O8
D) B2O3
E) Na2B4O7 ∙ 10H2O
41) Which group 3A element is a metalloid?
30
A) B
B) Al
C) Ga
D) In
E) Tl
42) Tetraboric acid, H2B4O7, is prepared by heating boric acid, H3BO3 (a condensation reaction involving
water loss). If 400.0 mmol H3BO3 are used, what mass (g) of H2O is formed, assuming quantitative
stoichiometric conversion?
A) 5.77
B) 0.500
C) 0.320
D) 7.21
E) 9.01
43) Diborane is ________.
A) B10H14
B) B2O3
C) BH3
D) B2H6
E) H3BO3
44) Boric oxide is ________.
A) B2O
B) BO2
C) BO
D) B2O3
E) B2O4
45) The correct name for the BH4- ion is ________.
A) borate
B) boride
C) borohydride
D) borite
E) hydroboride
22.3 Algorithmic Questions
1) Of the following, the most nonmetallic element is ________.
A) Cl
B) S
C) P
D) Br
E) Se
2) The least electronegative of the elements below is ________.
A) Se
B) S
C) F
D) Cl
E) Br
3) In the following chemical equation
PCl3 + 3H2O →
the products (when the equation is balanced) are ________.
A) H3PO3 + 3HCl
B) P(OH)3 + 3HCl
C) H(ClO)3 + PH3
D) HPCl2 + Cl(OH)3
E) PO3 + 3HCl
4) Which of the following is a molecular hydride?
A) H2O
B) CsH
C) MgH2
D) TiH2
E) LiOH
5) Which of the following is an ionic hydride?
A) CaH2
B) C2H4
C) HCl
D) NH3
E) CsOH
