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1) A stock solution of HNO3 is prepared and found to contain 12.7 M of HNO3. If 25.0
mL of the stock solution is diluted to a final volume of 0.500 L, the concentration of the
diluted solution is ________ M.
A) 0.254
B) 1.57
C) 0.635
D) 635
E) 254
2) A 25.0 mL sample of 0.150 M benzoic acid is titrated with a 0.150 M NaOH solution.
What is the pH at the equivalence point? The Ka of benzoic acid is 4.50 x 10-4.
A) 11.20
B) 9.80
C) 4.20
D) 7.00
E) 8.54
3) A sample of gas (1.3 mol) occupies ________ L at 22 °C and 3.5 atm.
A) 0.079
B) 0.67
C) 9.0
D) 14
E) 0.032
4) Calcium forms an ion with a charge of ________.
A) 1-
B) 2-
C) 1+
D) 2+
E) 0
5) A molecule has the formula AB3 and the central atom is in a different plane from the
surrounding three atoms. Its molecular shape is ________.
A) tetrahedral
B) trigonal pyramidal
C) linear
D) T-shaped
E) bent
6) The electron configuration of the S2- ion is ________.
A) [Ar]3s23p6
B) [Ar]3s23p2
C) [Ne]3s23p2
D) [Ne]3s23p6
E) [Kr]3s22p6
7) The source(s) of sulfur dioxide in the atmosphere is/are ________.
A) volcanic gases
B) forest fires
C) bacterial action
D) fossil-fuel combustion
E) all of the above
8) Amphoteric oxides are also known as ________.
A) basic oxides
B) basic anhydrides
C) acidic oxides
D) acidic anhydrides
E) none of the above
9) The hybridization scheme for BeF2 is ________.
A) sp
B) sp2
C) sp3
D) sp3d
E) sp3d2
10) Water containing high concentrations of ________ cations is called hard water.
A) Ca2+
B) Mg2+
C) Na+
D) K+
E) Ca2+ or Mg2+
11) Of the acids in the table below, ________ is the strongest acid.
A) HOAc
B) HCHO2
C) HClO
D) HF
E) HOAc and HCHO2
12) There are ________ mol of carbon atoms in 4 mol of C4H8O2.
A) 4
B) 8
C) 16
D) 20
E) 32
13) The Ka of benzoic acid is 6.30 x 10-5. The pH of a buffer prepared by combining
50.0 mL of 1.00 M potassium benzoate and 50.0 mL of 1.00 M benzoic acid is
________.
A) 1.705
B) 0.851
C) 3.406
D) 4.201
E) 2.383
14) A rectangular water tank is 14.5 cm long and 4.63 cm wide. If 368.5 g of water
completely fills the tank, the height of the tank is ________ cm. (Assume the density of
water is 1.000 g/ml.)
A) 6.45
B) 5.49
C) 14.0
D) 3.68
E) 4.62
15) Which of the following is a polydentate ligand?
A) ethylenediamine
B) water
C) cyanide ion
D) nitrite ion
E) ammonia
16) How many bonds can carbonate ion form to a metal ion?
A) 2
B) 3
C) 4
D) 1
E) 5
17) List the common particles and their symbols used in descriptions of radioactive
decay and nuclear transformations.
18) The strength of a covalent bond is measured by its ________.
19) The aromas of different fruit are due to the chemical compounds known as
________.
20) The volume of HCl gas required to react with excess Ca to produce 11.4 L of
hydrogen gas at 1.62 atm and 62.0 °C is ________ L.
21) What is the correct name for the compound, CH3CH2CH CHCH2CH CHCH3?
22) The doubly ionized form of an amino acid is called a(n) ________.
23) Find the temperature (in K) above which a reaction with a H of 53.00 kJ/mol and
a S of 100.0 J/K mol becomes spontaneous.
24) The production of dead and decaying plant material is a process called ________.
25) H2 is reacted with ________ to produce methanol.
26) London Dispersion Forces tend to ________ in strength with increasing molecular
weight.
