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Material Type: Exam; Class: General Chemistry II; Subject: Chemistry; University: Roane State Community College; Term: Spring 2004;
Typology: Exams
1 / 6
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Circle the correct answer on your answer sheet. Refer to the attached sheets to obtain
any equalibrium constants or thermodynamic values that are required.
a) 7.98 b) 3.42 c) 10.58 d) 5.29 e) 8.
M in NH 4
a) 4.92 b) 7.09 c) 4.15 d) 9.85 e) 9.
trimethyl amine, (CH 3
3
N with nitric acid, HNO 3
. Since both solutions start out to be
approximately 0.1 M, then the resulting solution is about 0.050 M.
a) 8.50 b) 11.25 c) 2.75 d) 1.45 e) 5.
being used?
Volume of HCN starting = 25.00 mL
M
Concentration of HCN = 0.
Volume of NaOH used = 13.99 mL
M
Concentration of NaOH = 0.
a) 9.45 b) 4.55 c) 9.18 d) 9.10 e) 7.
NaOH with HCl? The initial concentrations of both were about 0.10 M.
a) 9.93 b) 5.00 c) 7.00 d) 8.82 e) 2.
3
a) 12.23 and 10.
b) 1.77 and 3.
c) 13.12 and 6.
d) 0.88 and 6.
e) 1.77 and 7.
concentration necessary to dissolve AgCl to the extent of
M. The K f
for the Ag(NH 3
2
M. with the Cl
ion concentration as:
ion is 1.0 x 10
8
. The K sp
for AgCl is 1.8 x 10
AgCl + 2NH 3 º Ag(NH 3 ) 2
Cl
a) 1.88 b) 11.87 c) 4.68 d) 0.88 e) 3.
o
C? The C p
for copper = 25.0 J mol
o
C to
a) 2.0kJ b) 29.3kJ c) 40.5kJ d) 8.0kJ e) 19.3 kJ
o
, for the reaction: C 2
4
2
4
(The units for the answer are kJ mol
a) 2986.1 b) -2881.5 c) -1143.5 d) -1248.1 e) -2986.
o
, for the reaction: C 2
4
2
4
(The units for the answer are J mol
a) 221.0 b) 452.0 c) 13.0 d) -218.0 e) 218.
4
2
2
2
O(g) , the )))) r
o
for the
kJ mol 222.
and the )))) r
o
-854.7 is reaction at 298
o
C is J mol
M in sodium acetate, NaCH 3
1.21 M acetic acid, CH3COOH?
a) 4.87 b) 4.76 c) 4.64 d) 11.66 e) 2.
M in sodium acetate, NaCH 3
0.50 M acetic acid, CH3COOH?
a) 11.47 b) 2.53 c) 5.06 d) 4.46 e) 4.
s for some indicators:
methyl red = 5.
bromothymol blue = 7.
thymol blue = 8.
phenolphthalein = 9.
thymolphenolein = 10.
Which one of these indicators would be the best for a titration of HCl with NaOH
based only upon its pK a
a) thymol blue
b) methyl red
c) bromothymol blue
d) thymolphenolein
e) phenolphthalein
Test 2 for CHEM 1120 - General Chemistry II, Spring 2004 copy 1025 Answers
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