ACS GEN CHEM 2 FINAL EXAM STUDY
GUIDE WITH LATEST UPDATE
1. C
Where is the hydrophilic (attracted to water) regio
v v v v v v v
n of the molecule?
v v v
(A) Region 1 v
(B) Region 2 v
(C) Region 3 v
(D)The three regions are equally hydrophilic
v v v v v
2. C Which molecule is most soluble in water?
v v v v v v
3. D
A solution of NaCl in water has a concentration of 2
v v v v v v v v v v
0.5% by mass. What is the molal concentration of t
v v v v v v v v v
he solution?
v
1v /
, Molar Mass NaCl = 58.44 g/
v v v v v
mol (A) 0.205 m v v v
(B) 0.258 m v v
(C) 3.51 m v v
(D) 4.41 m v v
4. B
What is the mole fraction of water in 200 g of 89
v v v v v v v v v v v
% (by mass) ethanol, C2H5OH?
v v v v
Molar Mass C2H3OH = 46 g/
v v v v v
mol (A) 0.11 v v
(B) 0.24 v
(C) 0.32 v
(D) 0.76 v
5. D
A mixture of 100 g of K2Cr2O7 and 200 g of water is
v v v v v v v v v v v v
stirred at 60 degrees C until no more of the salt dis
v v v v v v v v v v v v
solves. The resulting solution is poured off into a se
v v v v v v v v v
parate beaker, leaving the undissolved solid behin
v v v v v v
d. The solution is now colled to 20 degrees C. What
v v v v v v v v v v v
mass of K2Cr2O7 crystal-
v v v
2v /
, lizes from the solution during the cooling?
v v v v v v
(A) 9 g v
(B) 18 g v
(C) 31 g v
(D) 62 g v
6. A
Carbonated beverages have a fizz because of gas
v v v v v v v v
dis-
vsolved in the solution. What increases the concen
v v v v v v v
tration of gas in a solution?
v v v v v
(A) cooling the solution v v
(B) heating the solution v v
(C) increasing the volume of solution v v v v
(D) decreasing the volume of solution v v v v
7. D
When 100 g of an unknown compound was diss
v v v v v v v v
olved in 1.00 kg of water, the freezing point was
v v v v v v v v v
lowered by
v v
6.36 degrees C. What is the identity of this unknown
v v v v v v v v v v
com- pound? v
Kf for water = 1.86 degrees C/m
v v v v v v
(A) CsCl
(B) KCl
(C) LiF
(D) NaCl
8. A
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GUIDE WITH LATEST UPDATE
1. C
Where is the hydrophilic (attracted to water) regio
v v v v v v v
n of the molecule?
v v v
(A) Region 1 v
(B) Region 2 v
(C) Region 3 v
(D)The three regions are equally hydrophilic
v v v v v
2. C Which molecule is most soluble in water?
v v v v v v
3. D
A solution of NaCl in water has a concentration of 2
v v v v v v v v v v
0.5% by mass. What is the molal concentration of t
v v v v v v v v v
he solution?
v
1v /
, Molar Mass NaCl = 58.44 g/
v v v v v
mol (A) 0.205 m v v v
(B) 0.258 m v v
(C) 3.51 m v v
(D) 4.41 m v v
4. B
What is the mole fraction of water in 200 g of 89
v v v v v v v v v v v
% (by mass) ethanol, C2H5OH?
v v v v
Molar Mass C2H3OH = 46 g/
v v v v v
mol (A) 0.11 v v
(B) 0.24 v
(C) 0.32 v
(D) 0.76 v
5. D
A mixture of 100 g of K2Cr2O7 and 200 g of water is
v v v v v v v v v v v v
stirred at 60 degrees C until no more of the salt dis
v v v v v v v v v v v v
solves. The resulting solution is poured off into a se
v v v v v v v v v
parate beaker, leaving the undissolved solid behin
v v v v v v
d. The solution is now colled to 20 degrees C. What
v v v v v v v v v v v
mass of K2Cr2O7 crystal-
v v v
2v /
, lizes from the solution during the cooling?
v v v v v v
(A) 9 g v
(B) 18 g v
(C) 31 g v
(D) 62 g v
6. A
Carbonated beverages have a fizz because of gas
v v v v v v v v
dis-
vsolved in the solution. What increases the concen
v v v v v v v
tration of gas in a solution?
v v v v v
(A) cooling the solution v v
(B) heating the solution v v
(C) increasing the volume of solution v v v v
(D) decreasing the volume of solution v v v v
7. D
When 100 g of an unknown compound was diss
v v v v v v v v
olved in 1.00 kg of water, the freezing point was
v v v v v v v v v
lowered by
v v
6.36 degrees C. What is the identity of this unknown
v v v v v v v v v v
com- pound? v
Kf for water = 1.86 degrees C/m
v v v v v v
(A) CsCl
(B) KCl
(C) LiF
(D) NaCl
8. A
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