Unlock document.
This document is partially blurred.
Unlock all pages and 1 million more documents.
Get Access
1) Triphenylphosphine is often given the abbreviated formula PPh3. The correct name
for Rh(PPh3)3Cl is ________.
A) chlorotriphenylphosphinerhodium
B) chlorotriphenylphosphinerhodium (I)
C) tris(triphenylphosphine)chlororhodium (I)
D) chlorotris(triphenylphosphine)rhodium (I)
E) chlorotris(triphenylphosphine)rhodate (I)
2) Calculate the percent ionization of formic acid (HCO2H) in a solution that is 0.322
M in formic acid and 0.178 M in sodium formate (NaHCO2). The Ka of formic acid is
1.77 x 10-4.
A) 35.6
B) 0.1011
C) 10.8
D) 1.03 x 10-3
E) 3.488
3) Soda-lime glass contains ________.
A) SiO2 and aluminum
B) SiO2, CaO, and Na2O
C) SiO2, CO2, and citric acid
D) SiO2, CO2, Na2O
E) pure SiO2
4) The formula of ammonium carbonate is ________.
A) (NH4)2CO3
B) NH4CO2
C) (NH3)2CO4
D) (NH3)2CO3
E) N2(CO3)3
5) Which one of the following is a metalloid?
A) Si
B) S
C) Cl
D) In
E) Li
6) Consider a solution containing 0.100 M fluoride ions and 0.126 M hydrogen
fluoride. The concentration of hydrogen fluoride after addition of 9.00 mL of 0.0100 M
HCl to 25.0 mL of this solution is ________ M.
A) 0.0953
B) 0.0900
C) 0.130
D) 0.122
E) 0.00976
7) The de Broglie wavelength of an electron with a velocity of 7.90 X 106 m/s is
________ m. The mass of the electron is 9.11 X 10-28 g.
A) 1.09 X 1010
B) 1.09 X 1013
C) 9.21 X 10-17
D) 9.21 X 10-14
E) 9.21 X 10-11
8) A ________ ΔH corresponds to an ________ process.
A) negative, endothermic
B) positive, exothermic
C) positive, endothermic
D) zero, exothermic
E) zero, endothermic
9) The charge on the manganese in the salt MnF3 is ________.
A) 1+
B) 1-
C) 2+
D) 2-
E) 3+
10) The temperature of a 11.8 g sample of calcium carbonate [CaCO3 (s)] increases
from 24.8 °C to 38.0 °C. If the specific heat of calcium carbonate is 0.82 J/g-K, how
many joules of heat are absorbed?
A) 130 J
B) 0.92 J
C) -130 J
D) -0.92 J
E) 11 J
11) The magnitude of the rate constant is ________.
A) 38.0
B) 0.278
C) 13.2
D) 42.0
E) 2.21
12) Volatility and vapor pressure are ________.
A) inversely proportional to one another
B) directly proportional to one another
C) not related
D) the same thing
E) both independent of temperature
13) The diagram below is the Born-Huber cycle for the formation of crystalline
potassium fluoride.
Which energy change corresponds to the first ionization energy of potassium?
A) 2
B) 5
C) 4
D) 3
E) 6
14) What method is used to produce the most hydrogen gas in the United States?
A) electrolysis of water
B) reaction of zinc with acid
C) reaction of methane with steam
D) reaction of coke (carbon) with steam
E) reaction of metallic sodium with water
15) Which one of the following should have the lowest boiling point?
A) CF4
B) SnF3
C) C4H9OH
D) HCl
E) F2O
16) What is the conjugate acid of CO3
2- ?
A) CO2
2-
B) HCO2
2-
C) H2CO3
D) HCO3
-
E) none of the above
17) Automotive air bags inflate when sodium azide decomposes explosively to its
constituent elements:
2NaN3 (s) → 2Na (s) + 3N2 (g)
How many moles of N2 are produced by the decomposition of 1.75 mol of sodium
azide?
A) 1.17
B) 5.25
C) 2.63
D) 0.583
E) 0.875
18) The slope of a plot of the natural log of the vapor pressure of a substance versus 1/T
is ________.
A) Hvap
B) -Hvap
C)
D) -
E)
