1) The name of PCl3 is ________.
A) potassium chloride
B) phosphorus trichloride
C) phosphorous(III) chloride
D) monophosphorous trichloride
E) trichloro potassium
2) What is the maximum amount in grams of SO3 that can be produced by the reaction
of 1.0 g of S with of O2 via the equation below?
S (s) + O2 (g) → SO3 (g) (not balanced)
A) 0.27
B) 1.7
C) 2.5
D) 3.8
E) 2.0
3) Which solution below has the highest concentration of hydro xide ions?
A) pH = 12.5
B) pH = 11
C) pH = 8.3
D) pH = 6.0
E) pH = 3.0
4) In which one of the following numbers are all of the zeros significant?
A) 100.090090
B) 0.143290
C) 0.05843
D) 0.1000
E) 00.0030020
5) What types of intermolecular forces exist between HI and H2S?
A) dipole-dipole and ion-dipole
B) dispersion forces, dipole-dipole, and ion-dipole
C) dispersion forces, hydrogen bonding, dipole-dipole, and ion-dipole
D) dispersion forces and dipole-dipole
E) dispersion forces and ion-dipole
6) Using the data in the table, which of the conjugate acids below is the weakest acid?
A) HClO
B) HCO3
–
C) H2S
D) NH3CH3
+
E) H2S and HClO
7) The normal melting point of the substance with the phase diagram shown above is
________ oC.
A) 15
B) 25
C) 35
D) 45
E) 55
8) The predominant intermolecular force in (CH3)2NH is ________.
A) London dispersion forces
B) ion-dipole forces
C) ionic bonding
D) dipole-dipole forces
E) hydrogen bonding
9) In a titration of 35.00 mL of 0.737 M H2SO4, ________ mL of a 0.827 M KOH
solution is required for neutralization.
A) 35.0
B) 1.12
C) 25.8
D) 62.4
E) 39.3
10) The width, length, and height of a large, custom-made shipping crate are 1.12 m,
1.25 m, and 0.83 m, respectively. The volume of the box using the correct number of
significant figures is ________ m3.
A) 1.16200
B) 1.2
C) 1.16
D) 1.162
E) 1.1620
11) There is/are ________ hybridized s atomic orbital(s) in ansp2-hybridized carbon
atom.
A) 1
B) 3
C) 2
D) 4
E) 0
12) What volume (L) of NH3 gas at STP is produced by the complete reaction of 7.5 g
of H2O according to the following reaction?
Mg3N2 (s) + 6H2O (l) → 3Mg(OH)2 (aq) + 2NH3 (g)
A) 3.1
B) 9.3
C) 19
D) 28
E) 0.32
13) Thermodynamic Quantities for Selected Substances at 298.15 K (25 oC)
The value of G o at 25 oC for the formation of calcium chloride from its constituent
elements,
Ca (s) + Cl2 (g) –> CaCl2 (s)
is ________ kJ/mol.
A) -795.8
B) +795.8
C) +763.7
D) +748.1
E) -748.1
14) What is the volume (in cm3) of a 36.7 g piece of metal with a density of 6.95
g/cm3?
A) 5.28
B) 19.5
C) .425
D) 6.65
E) none of the above
15) Of the bonds bond is ________.
A) strongest/shortest
B) strongest/longest
C) weakest/longest
D) weakest/shortest
E) intermediate in both strength and length
16) Consider the following selected postulates of Dalton’s atomic theory:
(i)Each element is composed of extremely small particles called atoms.
(ii)Atoms are indivisible.
(iii)Atoms of a given element are identical.
(iv)Atoms of different elements are different and have different properties.
Which of the postulates is(are) no longer considered valid?
A) (i) and (ii)
B) (ii) only
C) (ii) and (iii)
D) (iii) only
E) (iii) and (iv)