Chem 1411- Quiz 4
NAME:
1) Which response includes all of the following compounds that are soluble in water, and no others?
I. LiF
II. PbCl2
III. NH4CH3COO
IV. FeS
V. Mn(OH)2
VI. Cr(NO3)3
VII. CuCO3
VIII. Ni3(PO4)2
A) I, III, and VI
B) II, IV, V, and VII
D) I, II, V, and VIII
E) II, III, and VII
C) III, IV, V, and VIII
2) An aqueous solution contains 38.6 g NaCl per 755 mL of solution. This solution is ________.
A) 1.09 M
B) 2.41 M
C) 0.49 M
D) 2.57 M
E) 0.834 M
3) A 0.360 M solution of KNO3 (formula mass  101.09) which contains 125 grams of solute would have a
volume of ________.
A) 3430 mL B) 3600 mL
C) 7500 mL
D) 1250 mL
E) 3550 mL
4) What mass of CaCl2 is required to prepare 3.20 L of 0.850 M CaCl2 solution?
A) 302 g
B) 139 g
C) 101 g
D) 78.9 g
E) 62.4 g
5) What volume, in liters, of 0.150 Ba(OH)2 solution is needed to react completely with 0.200 L of a 0.300 M
HNO3 solution according to the equation
Ba(OH)2  2HNO3  Ba(NO3)2  2H2O
A) 0.150 L Ba(OH)2
B) 0.200 L Ba(OH)2
D) 0.600 L Ba(OH)2
E) 0.250 L Ba(OH)2
C) 0.300 L Ba(OH)2
6) What volume of 0.30 M Cu(OH)2 solution is needed to react with 500 mL of 0.100 M H3PO4 solution?
3 Cu(OH)2(aq)  2H3PO4(aq)  Cu3(PO4)2  6 H2O( )
A) 33.3 mL
B) 60.0 mL
C) 83.3 mL
D) 167 mL
E) 250 mL
7) 16.24 mL of 0.325 M Ba(OH)2 solution is required to completely neutralize 26.58 mL of HNO 3 solution.
What is the molarity of the nitric acid solution?
Ba(OH)2(aq)  2 HNO3(aq)  Ba(NO3)2(aq)  2 H2O( )
A) 0.0993 M
B) 0.432 M
C) 0.397 M
D) 0.741 M
E) 0.816 M
8) A student wishes to prepare 65.0 mL of 0.875 M HCl from 12.0 M HCl. What volume of the 12.0 M HCl
should he/she start with?
A) 3.86 mL
B) 18.2 mL
C) 4.65 mL
D) 9.28 mL
E) 4.74 mL
9) In a solution, the solvent is ________.
A) the substance being dissolved
B) always a liquid C) the substance present in the greatest amount
D) always water
E) never a gas
10)
Which choice gives the correct oxidation numbers for all three elements in Rb2SO3 in the order that the
elements are shown in the formula?
A.
-2, +6, -2
B.
-1, +4, -3
C. +2, +4, -2
D.
11)
12)
13)
+1, +4, -2
E. +1, +6, -6
Which of these compounds is a nonelectrolyte?
A. NaF
B. HNO3
C. CH3COOH (acetic acid)
D. NaOH
E. C6H12O6 (glucose)
Identify the major ionic species present in an aqueous solution of CaCO3.
A.
Ca2+, CO32-
B.
Ca2+, C2-, O3
D.
Ca2+, C+, O2-
E.
Ca2+, CO32-
C.
Ca+, C4+, O32-
Which of these choices is the correct net ionic equation for the reaction that occurs when solutions of
Pb(NO3)2 and NH4Cl are mixed?
A.
Pb(NO3)2(aq) + 2NH4Cl(aq)  NH4NO3(aq) + PbCl2(s)
B.
Pb2+(aq) + 2Cl-(aq)  PbCl2(s)
C.
D.
NH4+(aq)+ NO3- (aq)  2NH4NO3(s)
E.
No reaction occurs when the solutions are mixed.
14) The oxidation number of Fe in K3Fe(CN)6 is
A. +3.
15)
B.+2.
C.+1.
D.-3.
E.-4.
D.+5.
E. none of these
D.O
E.
The oxidation number of Cl in ClO4- is
A. -1.
B.+1.
C.+3.
16)
What element is reduced in the chemical reaction
Cu + 2H2SO4  CuSO4 + SO2 + 2H2O?
A.Cu
17)
B. MnO4-
C.H+
D. Mn2+
E. Fe3+
B. MnO4-.
C. H+.
D. Mn2+.
E. O2.
Zinc dissolves in hydrochloric acid to yield hydrogen gas:
Zn(s) + 2HCl(aq)  ZnCl2(aq) + H2(g)
What mass of hydrogen gas is produced when a 7.35 g chunk of zinc dissolves in 500. mL of 1.200 M HCl?
A. 0.605 g
20)
H2O
In the chemical reaction 5H2O2 + 2MnO4- + 6H+  2Mn2+ + 8H2O + 5O2, the oxidizing agent is
A. H2O2.
19)
C.S
Identify the reducing agent in the chemical reaction
5Fe2+(aq) + MnO4-(aq) + 8H+(aq) 5Fe3+(aq) + Mn2+(aq) + 4H2O(l).
A.Fe2+
18)
B.H
B.
0.113 g
C. 0.302 g
D.
0.453 g
E. 0.227 g
Identify the Brønsted acid1,base 1, acid 2 and base 2 in the following reaction.
NH3 + H2O  NH4+ + OH-