CHM1025 Final Exam Review, Spring 2017
Name: _____________________________________ Date: _________________
1. Which of the following pairings of name : formula is incorrect?
a. Calcium Nitrate : Ca(NO3)2
b. Copper Sulfate : CuSO4
c. Lead (II) Carbonate : PbCO3
d. Sodium Perchlorate : NaClO4
e. Carbon Monoxide : CO
2. How many atoms of bromine are in 1.5g of iron (III) bromide?
a. 5.4 x 1021
b. 1.3 x 1022
c. 4.8 x 1022
d. 3.1 x 1021
e. 9.2 x 1021
3. By how many electrons does an atom get reduced in the following reaction?
Cu (s) + 2AgNO3 (aq)  2Ag (s) + Cu(NO3)2 (aq)
a. 0
b. 1
c. 2
d. 3
e. 4
CHM1025 Final Exam Review, Spring 2017
4. A hot 625-g chunk of iron is plunged into 500. g of water in an insulated container. The
temperature of the water increases from 24 to 75 ºC. The specific heat capacity of the
iron is 0.45 J/gºC and the specific heat capacity of the water is 4.184 J/gºC. The initial
temperature of the iron was closest to….?
a. 380◦ C
b. 450◦ C
c. 143◦ C
d. 760◦ C
e. 286◦ C
5. Which of the following molecules will be polar?
f. H2
g. Cl2
h. CCl4
i. CO2
j. H2O
6. You run a combustion of hexane in excess oxygen. Given that you have 6 grams of
organic material, what is the percent yield given that 5.9 grams of water are produced?
a. 67%
b. 30%
c. 14%
d. 91%
e. 42%
CHM1025 Final Exam Review, Spring 2017
7. The average atomic mass of strontium is calculated from two isotopes. 85Sr has a mass
of 84.91 and 90Sr has a mass of 89.93. Use the atomic mass of strontium to calculate the
abundance of 85Sr.
a. 0.54
b. 0.51
c. 0.50
d. 0.46
e. 0.41
8. A solution of sucrose in water is 68.5% sucrose by mass and has a density of 1.59 g/mL.
What mass of sucrose, in grams, is contained in 4.00 L of solution?
a. 3.5 x 103
b. 1.1 x 103
c. 3.5
d. 4.4 x 103
e. 4.5
9. If volumes are additive and 80.0 mL of 0.40 M sodium chloride is mixed with 120 mL of
a calcium chloride solution to give a new solution in which [Cl-] is 0.52 M, what is the
concentration of the calcium chloride used to make the new solution?
a. 0.60 M
b. 0.30 M
CHM1025 Final Exam Review, Spring 2017
c. 0.072 M
d. 0.036 M
e. 0.52
10. The concentration of LiOH is 0.5 M. If 25mL of LiOH is needed to titrate 40 mL of
HNO3, what is the concentration of HNO3?
a. 0.03125 M
b. 0.8 M
c. 0.3125 M
d. 0.008 M
e. 1.00 M HNO3
11. The overall reaction in the commercial heat pack can be represented as
4Fe (s) + 3O2 (g)  2Fe2O3 (s) Delta H = -1652 kJ
How much heat is released (in kJ/mol) when 26 g of Fe and 4.6 g of O2 are reacted?
a. 79.16
b. 1652
c. 826
d. 0.0958
e. 158.26
12. Element M has a valence electron configuration ns1. Element X has the valence electron
configuration ns2np5. What ionic compound would most likely result from the reaction
between M and X?
a. M2X
b. MX2
c. MX
d. M3X2
e. MX3
CHM1025 Final Exam Review, Spring 2017
13. Which of the following molecules is/are correctly paired with their electron
geometries?
1. NH3 – Trigonal Planar 2. CS2 – Tetrahedral 3. CF4 - Tetrahedral
a. 1, 2, and 3
b. 3 only
c. 2 and 3
d. 1 and 3
e. 1 only
14. What is the molecular formula for a compound containing 38.8% Carbon, 16.1%
Hydrogen, and 45.1% nitrogen and has a molar mass of 124.24?
a. C4N4H10
b. CNH5
c. C4N4H20
d. C3N3H15
e. C5N5H10
15. Assign functional groups to the following molecule
CHM1025 Final Exam Review, Spring 2017
16. Draw out the molecule SO2 and determine if the molecule is polar or non polar and
show the bond angles.
17. You are given the following ions in solution (Mg2+, Na+, Sr2+). Which of the following
compounds can be used to successively precipitate only the strontium ions.
a. Aluminum chloride
b. Ammonium sulfate
c. Barium bromide
d. Potassium nitrate
e. Iron (II) chlorate
CHM1025 Final Exam Review, Spring 2017
18. Which element does the following electron configuration refer to?
[Ar] 4s23d104p3
a.
b.
c.
d.
e.
F
As
Se
Al
Si
19. Carbonic acid is supplied from the chemical companies as a 87% (m/m) solution in
water with a solution density of 1.560 g/mL. What is the concentration of the acid in
units of molarity?
f. 10.4 M
g. 13.7 M
h. 21.8 M
i. 28.6 M
j. 32.3 M
20. Determine the highest attractive force in the following compounds.
CaCl2 NH3 Br2
a. H-Bond, Dispersion, Ionic
b. Ionic, Polar, Dispersion
c. Polar, H-Bond, Dispersion
d. Ionic, H-Bond, Dispersion
e. Dispersion, Polar, H-Bond
CHM1025 Final Exam Review, Spring 2017