1) The instability of xenon fluorides is due to its negative enthalpy of formation.
2) The quantity of product that is calculated to form when all of the limiting reagent
reacts is called the actual yield.
3) Ozone depletion from chlorofluorocarbons is chiefly due to the production of free
chlorine.
4) A solution with a solute concentration greater than the solubility is called a
supercritical solution.
5) The greater the lattice energy, the greater the charges on the participatory ions and
the smaller their radii.
6) Electron affinity measures how easily an atom gains an electron.
7) A carbon with three or more attached groups will be chiral.
8) The value of ΔE for a system that performs 151 kJ of work on its surroundings and
loses 79 kJ of heat is ________ kJ.
A) +230.
B) -230.
C) +72
D) -72
E) -151
9) How many oxygen atoms are bonded to each silicon atom in SiO2?
A) 1
B) 2
C) 3
D) 4
E) none
10) A balloon originally had a volume of 4.39 L at 44 °C and a pressure of 729 torr. The
balloon must be cooled to ________ °C to reduce its volume to 3.99 L (at constant
pressure).
A) 0.00
B) 15.1
C) -288
D) 288
E) 546
11) Osmium has a density of 22.6 g/cm3. What volume (in cm3) would be occupied by
a 21.8 g sample of osmium?
A) 0.965
B) 1.04
C) 493
D) 2.03 X 10-3
E) 2.03 X 103
12) The ion with the smallest diameter is ________.
A) Li+
B) Na+
C) K+
D) Rb+
E) Cs+
13) A mineral is ________.
A) a solid inorganic compound that contains one or more metals
B) a vitamin
C) metal in its elemental form
D) a transition metal ion
E) a source of carbon
14) What is the primary commercial use of hydrogen in the United States?
A) as a rocket fuel, especially on the space shuttle
B) hydrogenation of vegetable oils
C) manufacture of methanol
D) manufacture of ammonia by the Haber process
E) as an automobile fuel
15) The coordination number for [Zn(H2O)3Cl]Cl is ________.
A) 5
B) 4
C) 2
D) 1
E) 6
16) How many d electrons are associated with the metal ion in [Cr(NH3)3
+?
A) 1
B) 2
C) 3
D) 4
E) 5
17) Linkage isomerism would most likely occur when which of the following ligands is
present?
A) H2O
B) NH3
C) Cl–
D) PF3
E) NCS–
18) Of Li, K, P and Ne which is the least electronegative?
19) Chains of silicate tetrahedra are called ________.
20) The symbol for the element phosphorus is ________.
21) The formula weight of FeCl36H2O is ________.
22) Conversion of one nucleus into another was first demonstrated in 1919 by
________.
23) How can high-spin and low-spin transition metal complexes be distinguished from
each other?