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1) How many hydrogen atoms must bond to silicon to give it an octet of valence
electrons?
A) 1
B) 2
C) 3
D) 4
E) 5
2) The Keq for the equilibrium below is 7.52 x 10-2 at 480.0 oC.
2Cl2 (g) + 2H2O (g) 4HCl (g) + O2 (g)
What is the value of Keq at this temperature for the following reaction?
2HCl (g) + O2 (g) Cl2 (g) + H2O (g)
A) 13.3
B) 3.65
C) -0.0376
D) 5.66 x 10-3
E) 0.274
3) The concentration of S2O8
2- remaining at 400 s is ________ M.
A) +0.015
B) +0.035
C) -0.007
D) +0.045
E) +0.057
4) A 0.0035 M aqueous solution of a particular compound has pH = 2.46. The
compound is ________.
A) a weak base
B) a weak acid
C) a strong acid
D) a strong base
E) a salt
5) Which of the following contains a peptide linkage?
A)
B)
C)
D)
E) none of the above
6) Select the substance that is thought to be partially responsible for depleting the
concentration of ozone in the stratosphere.
A) CFCl3
B) CO2
C) O2
D) N2
E) He
7) In a linear graphical representation of a zero-order reaction, what value is
represented by the y-intercept of the line drawn from plotting [A] vs. time?
A) [A]0
B) ln[A]0
C) 1/[A]0
D) [A]0
2
E) [A]/k
8) Which one of the following has the element name and symbol correctly matched?
A) Ne, nitrogen
B) Si, sulfur
C) Ca, carbon
D) Be, beryllium
E) None of the symbols are correctly matched to the element name.
9) Which one of the following species is paramagnetic?
A) Cu
B) Ne
C) Y3+
D) Ra
E) Zn2+
10) The angles between sp2 orbitals are ________.
A) 45°
B) 180°
C) 90°
D) 109.5°
E) 120°
11) Which one of the following complexes would most likely have tetrahedral
geometry?
A) [NiCl4]2-
B) [Co(H2O)6]2+
C) [Cr(NH3)6]3+
D) [Fe(CN)6]3+
E) [Pt(NH3)2Cl2]
12) Of the following, ________ radiation has the longest wavelength and ________
radiation has the greatest energy.
gamma
ultraviolet
visible
A) ultraviolet, gamma
B) visible, ultraviolet
C) gamma, gamma
D) visible, gamma
E) gamma, visible
13) A ligand with a single donor atom is called ________.
A) a chelon
B) a chelate
C) polydentate
D) monodentate
E) bidentate
