Dear Students/Parents
We at 'Apex Institute' are committed to provide our students best quality education with ethics. Moving in this direction, we have decided that unlike other expensive and 5star facility type institutes who are huge investors and advertisers, we shall not invest huge amount of money in advertisements. It shall rather be invested on the betterment, enhancement of quality and resources at our center.
We are just looking forward to have 'word-of-mouth' publicity instead. Because, there is only a satisfied student and his/her parents can judge an institute's quality and it's faculty members coaching.
Those coaching institutes, who are investing highly on advertisements, are actually, wasting their money on it, in a sense. Rather, the money should be invested on highly experienced faculty members and on teaching gears.
We all at 'Apex' are taking this initiative to improve the quality of education along-with each student's development and growth.
Committed to excellence...
With best wishes.
S . Iqbal
( Motivator & Mentor)
SYNTHESIS AND CHARACTERIZATION OF SOME TRANSITION METAL COMPLEXES WITH A NEW ...EDITOR IJCRCPS
A new monodentate phosphorus yield Ph3P=CHC(O)C6H4-m-Br (L),was synthesized and characterized with elemental analysis as
well as various spectroscopic techniques. The reactions of the title ylide with mercury(II) halides in equimolar ratios using dry
methanol as solvent have yielded [L.HgX2]2 (X= Cl (1), Br (2), I (3)). The reaction of 1 equiv. this ylide with Cd(NO3)2.4H2O in the
same solvent give a polynuclear complex [Cd (L)(NO3)(μ-NO3)]n (4), followed by treatment with 2 equiv. AgNO3 and AgOTf led to
monomeric chelate complexes 5 and 6, respectively. Characterization of the obtained compounds was also performed by
elemental analysis, IR, 1H, 31P and 13C NMR. All DMSO-solved synthesized compounds were subjected to biological evaluation for
their antibacterial against 6 Gram positive and negative bacteria effects by disc diffusion method. Results showed antibacterial
activity for studied metal complexes and suggested their possible application as antibacterial agents.
Keywords: Phosphorus yields, mercury(II) complexes, silver(I) complexes, cadmium(II) complexes, antibacterial activity.
Chem 1010 Name__________________________________
Unit 4-5 Test
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
1) When the following equation is balanced, the coefficient of Al is __________.
Al (s) + H2O (l) → Al(OH)3 (s) + H2 (g)
A) 4
B) 1
C) 3
D) 5
E) 2
2) When the following equation is balanced, the coefficient of NaOH is __________.
H3PO4 (aq) + NaOH (aq) → Na3PO4 (aq) + H2O (l)
A) 1
B) 4
C) 2
D) 0
E) 3
3) When the following equation is balanced, the coefficient of O2 is __________.
C2H4O (g) + O2 (g) → CO2 (g) + H2O (g)
A) 5
B) 3
C) 4
D) 2
E) 1
4) When the following equation is balanced, the coefficient of C3H8O3 is __________.
C3H8O3 (g) + O2 (g) → CO2 (g) + H2O (g)
A) 2
B) 5
C) 7
D) 1
E) 3
1
5) Write a balanced equation to show the reaction of aqueous aluminum acetate with aqueous ammonium
phosphate to form solid aluminum phosphate and aqueous ammonium acetate.
A) Al(C2H3O2)2(aq) + (NH4)2PO4(aq) → AlPO4(s) + 2 NH4C2H3O2(aq)
B) Al(CO2)3(aq) + (NH4)3PO3(aq) → AlPO3(s) + 3 NH4CO2(aq)
C) Al(C2H3O2)2(aq) + (NH3)2PO4(aq) → AlPO4(s) + 2 NH3C2H3O2(aq)
D) Al(C2H3O2)3(aq) + (NH4)3PO4(aq) → AlPO4(s) + 3 NH4C2H3O2(aq)
E) Al(CO3)2(aq) + (NH3)2PO4(aq) → AlPO4(s) + 2 NH3CO3(aq)
6) When the reaction shown is correctly balanced, the coefficients are:
C6H6 (l) + O2 (g) → CO2 (g) + H2O (g)
A) 1, 3.5, 6, 7
B) 2, 16.5, 12, 7
C) 2, 15, 12, 6
D) 1, 9.5, 6, 7
E) 1, 6, 6, 7
7) The balanced reaction between aqueous nitric acid and aqueous strontium hydroxide is ________.
A) 2HNO3 (aq) + Sr(OH)2 (aq) → 2H2O (l) + Sr(NO3)2 (aq)
B) 2HNO3 (aq) + Sr(OH)2 (aq) → Sr(NO3)2(aq) + 2H2 (g)
C) HNO3 (aq) + Sr(OH)2 (aq) → H2O (l) + Sr(NO3)2 (aq)
D) HNO3 (aq) + Sr(OH)2 (aq) → Sr(NO3)2 (aq) + H2 (g)
E) HNO3 (aq) + SrOH (aq) → H2O (l) + SrNO3 (aq)
8) What are the spectator ions in the reaction between Mg(OH)2 (aq) and HCl (aq)?
A) H+ and OH-
B) Mg2+ and H+
C) H+ and Cl-
D) OH- only
E) Mg2+ and Cl-
9) When aqueous solutions of AgNO3 and KI are mixed, AgI precipitates. The balanced net ionic equation is
________.
A) Ag+ (aq) + NO3- (aq) → AgNO3 (aq)
B) Ag+ (aq) + I- (aq) → AgI (s)
C) AgNO3 (aq) + KI (aq) → AgI (s) + KNO3 (aq)
D) AgNO3 (aq) + KI (aq) → AgI (aq) + KNO3 (s)
E) Ag+ (aq) + NO3- (aq) → AgNO3 (s)
10) A neutralization reaction between an acid and a metal hydroxide produces ________.
A) oxygen gas
B) sodium hydroxide
C) ammonia
D) water and a salt
E) hydrogen gas
2
11) When H2SO4 is neutralized by NaOH in aqueous solution, the net ionic equation is ________.
A) SO42- (aq) + 2Na+ (aq) → Na2SO4 (s)
B) 2H+ (aq) + 2NaOH (aq) → 2H2O (l) + 2Na+ (aq)
C) SO42- (aq) + 2Na+ (aq) → Na2SO4 (aq)
D) H2SO4 (aq) + 2OH- (aq) → 2H2O (l) + SO42- (aq)
E) H+ (aq) + OH- (aq) → H2O (l)
12) Which of the following is an oxidation-reduction reaction?
A) Pb(C2H3O2)2(aq) + 2 NaCl(.
https://www.deped.gov.ph/wp-content/uploads/2019/01/General-Chemistry-1-and-2.pdf
General Chemistry
GenChem
STEM
Science, Technology, Engineering, and Mathematics
K to 12 Senior High School STEM Specialized Subject – General Chemistry 1 and 2
Quarter 1 – General Chemistry 1
Matter and Its Properties
Measurements
Atoms, Molecules and Ions
Stoichiometry
Percent Composition and Chemical Formulas
Chemical reactions and chemical equations
Mass Relationships in Chemical Reactions
Gases
Dalton’s Law of partial pressures
Gas stoichiometry
Kinetic molecular theory of gases
Quarter 2 – General Chemistry 1
Electronic Structure of Atoms
Electronic Structure and Periodicity
Chemical Bonding
Organic compounds
Quarter 3 – General Chemistry 2
Intermolecular Forces and Liquids and Solids
Physical Properties of Solutions
Thermochemistry
Chemical Kinetics
Quarter 4 – General Chemistry 2
Chemical Thermodynamics
Chemical Equilibrium
Acid-Base Equilibria and Salt Equilibria
Electrochemistry
Dear Students/Parents
We at 'Apex Institute' are committed to provide our students best quality education with ethics. Moving in this direction, we have decided that unlike other expensive and 5star facility type institutes who are huge investors and advertisers, we shall not invest huge amount of money in advertisements. It shall rather be invested on the betterment, enhancement of quality and resources at our center.
We are just looking forward to have 'word-of-mouth' publicity instead. Because, there is only a satisfied student and his/her parents can judge an institute's quality and it's faculty members coaching.
Those coaching institutes, who are investing highly on advertisements, are actually, wasting their money on it, in a sense. Rather, the money should be invested on highly experienced faculty members and on teaching gears.
We all at 'Apex' are taking this initiative to improve the quality of education along-with each student's development and growth.
Committed to excellence...
With best wishes.
S . Iqbal
( Motivator & Mentor)
SYNTHESIS AND CHARACTERIZATION OF SOME TRANSITION METAL COMPLEXES WITH A NEW ...EDITOR IJCRCPS
A new monodentate phosphorus yield Ph3P=CHC(O)C6H4-m-Br (L),was synthesized and characterized with elemental analysis as
well as various spectroscopic techniques. The reactions of the title ylide with mercury(II) halides in equimolar ratios using dry
methanol as solvent have yielded [L.HgX2]2 (X= Cl (1), Br (2), I (3)). The reaction of 1 equiv. this ylide with Cd(NO3)2.4H2O in the
same solvent give a polynuclear complex [Cd (L)(NO3)(μ-NO3)]n (4), followed by treatment with 2 equiv. AgNO3 and AgOTf led to
monomeric chelate complexes 5 and 6, respectively. Characterization of the obtained compounds was also performed by
elemental analysis, IR, 1H, 31P and 13C NMR. All DMSO-solved synthesized compounds were subjected to biological evaluation for
their antibacterial against 6 Gram positive and negative bacteria effects by disc diffusion method. Results showed antibacterial
activity for studied metal complexes and suggested their possible application as antibacterial agents.
Keywords: Phosphorus yields, mercury(II) complexes, silver(I) complexes, cadmium(II) complexes, antibacterial activity.
Chem 1010 Name__________________________________
Unit 4-5 Test
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
1) When the following equation is balanced, the coefficient of Al is __________.
Al (s) + H2O (l) → Al(OH)3 (s) + H2 (g)
A) 4
B) 1
C) 3
D) 5
E) 2
2) When the following equation is balanced, the coefficient of NaOH is __________.
H3PO4 (aq) + NaOH (aq) → Na3PO4 (aq) + H2O (l)
A) 1
B) 4
C) 2
D) 0
E) 3
3) When the following equation is balanced, the coefficient of O2 is __________.
C2H4O (g) + O2 (g) → CO2 (g) + H2O (g)
A) 5
B) 3
C) 4
D) 2
E) 1
4) When the following equation is balanced, the coefficient of C3H8O3 is __________.
C3H8O3 (g) + O2 (g) → CO2 (g) + H2O (g)
A) 2
B) 5
C) 7
D) 1
E) 3
1
5) Write a balanced equation to show the reaction of aqueous aluminum acetate with aqueous ammonium
phosphate to form solid aluminum phosphate and aqueous ammonium acetate.
A) Al(C2H3O2)2(aq) + (NH4)2PO4(aq) → AlPO4(s) + 2 NH4C2H3O2(aq)
B) Al(CO2)3(aq) + (NH4)3PO3(aq) → AlPO3(s) + 3 NH4CO2(aq)
C) Al(C2H3O2)2(aq) + (NH3)2PO4(aq) → AlPO4(s) + 2 NH3C2H3O2(aq)
D) Al(C2H3O2)3(aq) + (NH4)3PO4(aq) → AlPO4(s) + 3 NH4C2H3O2(aq)
E) Al(CO3)2(aq) + (NH3)2PO4(aq) → AlPO4(s) + 2 NH3CO3(aq)
6) When the reaction shown is correctly balanced, the coefficients are:
C6H6 (l) + O2 (g) → CO2 (g) + H2O (g)
A) 1, 3.5, 6, 7
B) 2, 16.5, 12, 7
C) 2, 15, 12, 6
D) 1, 9.5, 6, 7
E) 1, 6, 6, 7
7) The balanced reaction between aqueous nitric acid and aqueous strontium hydroxide is ________.
A) 2HNO3 (aq) + Sr(OH)2 (aq) → 2H2O (l) + Sr(NO3)2 (aq)
B) 2HNO3 (aq) + Sr(OH)2 (aq) → Sr(NO3)2(aq) + 2H2 (g)
C) HNO3 (aq) + Sr(OH)2 (aq) → H2O (l) + Sr(NO3)2 (aq)
D) HNO3 (aq) + Sr(OH)2 (aq) → Sr(NO3)2 (aq) + H2 (g)
E) HNO3 (aq) + SrOH (aq) → H2O (l) + SrNO3 (aq)
8) What are the spectator ions in the reaction between Mg(OH)2 (aq) and HCl (aq)?
A) H+ and OH-
B) Mg2+ and H+
C) H+ and Cl-
D) OH- only
E) Mg2+ and Cl-
9) When aqueous solutions of AgNO3 and KI are mixed, AgI precipitates. The balanced net ionic equation is
________.
A) Ag+ (aq) + NO3- (aq) → AgNO3 (aq)
B) Ag+ (aq) + I- (aq) → AgI (s)
C) AgNO3 (aq) + KI (aq) → AgI (s) + KNO3 (aq)
D) AgNO3 (aq) + KI (aq) → AgI (aq) + KNO3 (s)
E) Ag+ (aq) + NO3- (aq) → AgNO3 (s)
10) A neutralization reaction between an acid and a metal hydroxide produces ________.
A) oxygen gas
B) sodium hydroxide
C) ammonia
D) water and a salt
E) hydrogen gas
2
11) When H2SO4 is neutralized by NaOH in aqueous solution, the net ionic equation is ________.
A) SO42- (aq) + 2Na+ (aq) → Na2SO4 (s)
B) 2H+ (aq) + 2NaOH (aq) → 2H2O (l) + 2Na+ (aq)
C) SO42- (aq) + 2Na+ (aq) → Na2SO4 (aq)
D) H2SO4 (aq) + 2OH- (aq) → 2H2O (l) + SO42- (aq)
E) H+ (aq) + OH- (aq) → H2O (l)
12) Which of the following is an oxidation-reduction reaction?
A) Pb(C2H3O2)2(aq) + 2 NaCl(.
https://www.deped.gov.ph/wp-content/uploads/2019/01/General-Chemistry-1-and-2.pdf
General Chemistry
GenChem
STEM
Science, Technology, Engineering, and Mathematics
K to 12 Senior High School STEM Specialized Subject – General Chemistry 1 and 2
Quarter 1 – General Chemistry 1
Matter and Its Properties
Measurements
Atoms, Molecules and Ions
Stoichiometry
Percent Composition and Chemical Formulas
Chemical reactions and chemical equations
Mass Relationships in Chemical Reactions
Gases
Dalton’s Law of partial pressures
Gas stoichiometry
Kinetic molecular theory of gases
Quarter 2 – General Chemistry 1
Electronic Structure of Atoms
Electronic Structure and Periodicity
Chemical Bonding
Organic compounds
Quarter 3 – General Chemistry 2
Intermolecular Forces and Liquids and Solids
Physical Properties of Solutions
Thermochemistry
Chemical Kinetics
Quarter 4 – General Chemistry 2
Chemical Thermodynamics
Chemical Equilibrium
Acid-Base Equilibria and Salt Equilibria
Electrochemistry
Chapter 4 Problems1. Which of these compounds is a strong elec.docxketurahhazelhurst
Chapter 4 Problems
1.
Which of these compounds is a strong electrolyte?
A.
H2O
B.
O2
C.
H2SO4
D.
C6H12O6 (glucose)
E.
CH3COOH (acetic acid)
2. Which of these compounds is a nonelectrolyte?
A.
NaF
B.
HNO3
C.
CH3COOH (acetic acid)
D.
NaOH
E.
C6H12O6 (glucose)
3. Based on the solubility rules, which one of these compounds should be insoluble in water?
A.
NaCl
B.
MgBr2
C.
FeCl2
D.
AgBr
E.
ZnCl2
4. Based on the solubility rules, which of these processes will occur when a solution containing about 0.1 g of Pb(NO3)2(aq) is mixed with a solution containing 0.1 g of KI(aq)/100 mL?
A.
KNO3 will precipitate; Pb2+ and I- are spectator ions.
B.
No precipitate will form.
C.
Pb(NO3)2 will precipitate; K+ and I- are spectator ions.
D.
PbI2 will precipitate; K+ and NO3- are spectator ions.
E.
Pb2+ and I- are spectator ions, and PbI2 will precipitate.
5. Give the oxidation # for the following atoms:
a. N in NaNO3 _________
b. Mn in KMnO4 _________
c. Cl in ClO3- _________
6. Which of these equations does not represent an oxidation-reduction reaction?
A.
3Al + 6HCl ( 3H2 + AlCl3
B.
2H2O ( 2H2 + O2
C.
2NaCl + Pb(NO3)2 ( PbCl2 + 3NaNO3
D.
2NaI + Br2 ( 2NaBr + I2
E.
Cu(NO3)2 + Zn ( Zn(NO3)2 + Cu
7. What element is oxidized in the chemical reaction
NiO2 + Cd + 2H2O ( Ni(OH)2 + Cd(OH)2?
A.
Ni
B.
Cd
C.
O
D.
H
E.
This is not a redox reaction.
8. Which of these chemical equations describes a precipitation reaction?
A.
2H2(g) + O2(g) ( 2H2O(l)
B.
CaBr2(aq) + H2SO4(aq) ( CaSO4(s) + 2HBr(g)
C.
2KNO3(s) ( 2KNO2(s) + O2(g)
D.
2KBr(aq) + Cl2(g) ( 2KCl(aq) + Br2(l)
E.
2Al(s) + 3H2SO4(aq) ( Al2(SO4)3(aq) + 3H2(g)
9.
The common constituent in all acid solutions is
A.
H2.
B.
H+.
C.
OH-.
D.
H2SO4.
E.
Cl-.
10. Which of these chemical equations describes an acid-base neutralization reaction?
A.
2Al(s) + 3H2SO4(aq) ( Al2(SO4)3(aq) + 3H2(g)
B.
SO2(g) + H2O(l) ( H2SO3(g)
C.
LiOH(aq) + HNO3(aq) ( LiNO3(aq) + H2O(l)
D.
2KBr(aq) + Cl2(g) ( 2KCl(aq) + Br2(l)
E.
CaBr2(aq) + H2SO4(aq) ( CaSO4(s) + 2HBr(g)
11. Which of these chemical equations describes a combustion reaction?
A.
2C2H6(g) + 7O2(g) ( 4CO2(g) + 6H2O(l)
B.
LiOH(aq) + HNO3(aq) ( LiNO3(aq) + H2O(l)
C.
N2(g) + 3H2(g) ( 2NH3(g)
D.
2Na(s) + 2H2O(l) ( 2NaOH(aq) + H2(g)
E.
2Al(s) + 3H2SO4(aq) ( Al2(SO4)3(aq) + 3H2(g)
12.
What is the molarity of a solution that contains 5.0 moles of solute in 2.00 liters of solution?
13. What mass of K2CO3 is needed to prepare 200. mL of a solution having a concentration of 0.150 M?
14. A 50.0 mL sample of 0.436 M NH4NO3 is diluted with water to a total volume of 250.0 mL. What is the ammonium nitrate concentration in the resulting solution?
15. During a titration the following data were collected. A 10. mL portion of an unknown monoprotic acid solution was titrated with 1.0 M NaOH; 40. mL of the base were required to neutralize the sample. What is the molarity of the acid solution?
16. 34.62 mL of ...
Chapter 4 Problems1. Which of these compounds is a strong elec.docxrobertad6
Chapter 4 Problems
1.
Which of these compounds is a strong electrolyte?
A.
H2O
B.
O2
C.
H2SO4
D.
C6H12O6 (glucose)
E.
CH3COOH (acetic acid)
2. Which of these compounds is a nonelectrolyte?
A.
NaF
B.
HNO3
C.
CH3COOH (acetic acid)
D.
NaOH
E.
C6H12O6 (glucose)
3. Based on the solubility rules, which one of these compounds should be insoluble in water?
A.
NaCl
B.
MgBr2
C.
FeCl2
D.
AgBr
E.
ZnCl2
4. Based on the solubility rules, which of these processes will occur when a solution containing about 0.1 g of Pb(NO3)2(aq) is mixed with a solution containing 0.1 g of KI(aq)/100 mL?
A.
KNO3 will precipitate; Pb2+ and I- are spectator ions.
B.
No precipitate will form.
C.
Pb(NO3)2 will precipitate; K+ and I- are spectator ions.
D.
PbI2 will precipitate; K+ and NO3- are spectator ions.
E.
Pb2+ and I- are spectator ions, and PbI2 will precipitate.
5. Give the oxidation # for the following atoms:
a. N in NaNO3 _________
b. Mn in KMnO4 _________
c. Cl in ClO3- _________
6. Which of these equations does not represent an oxidation-reduction reaction?
A.
3Al + 6HCl ( 3H2 + AlCl3
B.
2H2O ( 2H2 + O2
C.
2NaCl + Pb(NO3)2 ( PbCl2 + 3NaNO3
D.
2NaI + Br2 ( 2NaBr + I2
E.
Cu(NO3)2 + Zn ( Zn(NO3)2 + Cu
7. What element is oxidized in the chemical reaction
NiO2 + Cd + 2H2O ( Ni(OH)2 + Cd(OH)2?
A.
Ni
B.
Cd
C.
O
D.
H
E.
This is not a redox reaction.
8. Which of these chemical equations describes a precipitation reaction?
A.
2H2(g) + O2(g) ( 2H2O(l)
B.
CaBr2(aq) + H2SO4(aq) ( CaSO4(s) + 2HBr(g)
C.
2KNO3(s) ( 2KNO2(s) + O2(g)
D.
2KBr(aq) + Cl2(g) ( 2KCl(aq) + Br2(l)
E.
2Al(s) + 3H2SO4(aq) ( Al2(SO4)3(aq) + 3H2(g)
9.
The common constituent in all acid solutions is
A.
H2.
B.
H+.
C.
OH-.
D.
H2SO4.
E.
Cl-.
10. Which of these chemical equations describes an acid-base neutralization reaction?
A.
2Al(s) + 3H2SO4(aq) ( Al2(SO4)3(aq) + 3H2(g)
B.
SO2(g) + H2O(l) ( H2SO3(g)
C.
LiOH(aq) + HNO3(aq) ( LiNO3(aq) + H2O(l)
D.
2KBr(aq) + Cl2(g) ( 2KCl(aq) + Br2(l)
E.
CaBr2(aq) + H2SO4(aq) ( CaSO4(s) + 2HBr(g)
11. Which of these chemical equations describes a combustion reaction?
A.
2C2H6(g) + 7O2(g) ( 4CO2(g) + 6H2O(l)
B.
LiOH(aq) + HNO3(aq) ( LiNO3(aq) + H2O(l)
C.
N2(g) + 3H2(g) ( 2NH3(g)
D.
2Na(s) + 2H2O(l) ( 2NaOH(aq) + H2(g)
E.
2Al(s) + 3H2SO4(aq) ( Al2(SO4)3(aq) + 3H2(g)
12.
What is the molarity of a solution that contains 5.0 moles of solute in 2.00 liters of solution?
13. What mass of K2CO3 is needed to prepare 200. mL of a solution having a concentration of 0.150 M?
14. A 50.0 mL sample of 0.436 M NH4NO3 is diluted with water to a total volume of 250.0 mL. What is the ammonium nitrate concentration in the resulting solution?
15. During a titration the following data were collected. A 10. mL portion of an unknown monoprotic acid solution was titrated with 1.0 M NaOH; 40. mL of the base were required to neutralize the sample. What is the molarity of the acid solution?
16. 34.62 mL of.
1. CHEM 1411 – S.I. PRACTICE TEST 2
EXAM 2 – Chapter 3 & 4 (up to redox)
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the
question.
1) When the following equation is balanced, the coefficient of Al2O3 is____________.
Al2O3 (s) + C (s) + Cl2 (g) → AlCl3 (s) + CO (g)
A) 2 B) 5 C) 4 D) 1 E) 3
2) Which of the following is soluble in water at 25°C?_______________.
A) Fe3(PO4)2 B) FeS C) Fe CO3 D) Fe(OH)2 E) Fe(NO3)2
3) The mass % of C in methane is _____________.
A) 7.743 B) 133.6 C) 74.87 D) 92.96 E) 25.13
4) What is the coefficient of O2 when the following equation is completed and balanced?
C2H6 + O2 → ______________
A) 6 B) 3 C) 5 D) 2 E) 7
5) What is the coefficient of H3PO4 when the following equation is completed and balanced?
H3PO4 (aq) + NaOH (aq)
A) 2 B) 3 C) 0 D) 1 E) -5
6) The formula weight of ammonium sulfate, (NH4)2SO4 , is _______ amu.
A) 132 B) 116 C) 119 D) 264 E) 100
7) A compound contains 40.0% C, 6.71% H, and 53.29% O by mass. The molecular weight of the
compound is 60.05 amu. The molecular formula of this compound is _______________.
A) C2H4O2 B) CH2O C) CHO2 D) C2H2O4 E) C2H3O4
8) Convert the following to a balanced chemical reaction: Gaseous hydrogen reacts with carbon monoxide
to form methanol, CH3OH.
A) 2H2 + CO2 → CH3OH B) 4H + CO → CH3OH
C) H2 + CO → CH3OH D) 2H2 + CO → CH3OH
9) Calculate the number of molecules in 172 g of table sugar, C12H22O11.
A) 1.85 x 1022 B) 6.02 x 1023 C) 3.60 x 1024 D) 3.01 x 1023
10) How many moles in 172g of table sugar, C12H22O11.
A) 0.500 B) 1.00 C) 3.00 D) 12.0
2. 11) How many Carbon atoms in 172 g of table sugar C12H22O11.
A) 1.85 x 1022 B) 6.02 x 1023 C) 3.60 x 1024 D) 3.01 x 1023
12) If 4.0 moles of Li and 2.0 moles of O2 are used in the reaction Li + O2 Li2O, then the limiting
reactant is ___________ and the theoretical yield of Li2O is ___________g.
A) oxygen, 6.0 x 10 B) oxygen, 1.2 x102
C) lithium, 3.0 x 10 D) lithium, 6.0 x 10
13) In a certain experiment 5.4 g Al was reacted with excess oxygen and 5.1 g of aluminum oxide was
obtained. What was the percent yield of the reaction?’
A) 50 percent B) 68 percent C) 78 percent D) 94 percent
14) Hoe many milliliters of 0.1000 M Ca(OH)2 solution are needed to supply 0.05000 mol of Ca(OH)2?
A) 1000. mL B) 2000. mL C) 250.0 mL D) 500.0 mL
15) Indicate the concentration of each ion or molecule present in a 0.25 M CaBr2 solution.
A) 0.50 M Ca2+, 0.25 M Br B) 0.25 M Ca2+, 0.50 M Br
C) 0.25 M CaBr2 D) 0.25 M Ca2+, 0.25 M Br
16) Which of the following reactions is an acid-based neutralization reaction?
A) Ca(OH)2 (aq) + 2HI (aq) CaI2 (aq) + 2H2O (l)
B) 2Na(s) 2H2O (l) H2(g) +2NaOH(aq)
C) Na3PO4(s) +H2O 3Na+ (aq) + PO43-(aq)
D) AgNO3(aq) + NaI(aq) AgI(s) + NaO3(aq)
17) Write a balanced net ionic equation for the following reaction and identify the spectator ion(s) present.
FeO(s) +HClO4(aq) H2O (l) + Fe(ClO4)2 (aq)
A) FeO(s) +2H+(aq) H2O(l) + Fe2+(aq) ; ClO4-, and Fe2+ spectator ions
B) FeO(s) +2H+(aq) H2O(l) + Fe2+(aq) ; ClO4- spectator ion
C) FeO(s) +2H+(aq) 2 ClO4- (aq) H2O (l) + Fe2+ (aq) + 2ClO4- (aq); ClO4- spectator ion
D) FeO(s) +2HClO4- (aq) H2O (l) + Fe(ClO4)2 (aq) ; no spectator ions
18) When NaCl is added to a solution of (i) AgNO3, (ii) Pb(NO3)2, or (iii) Ca(NO3)2, in which case(s) does
a precipitate form?
A) Ca(NO3)2 only B) Pb(NO3)2 only
C) AgNO3 and Pb(NO3)2 only D) AgNO3 only
19) Write a balanced equation for the reaction, if any, that may occur when the following pair is mixed:
Pb(NO3)2 (aq) and MgSO4(aq).
A) Mg+(aq) + NO3-(aq) MgNO3(s) B) Mg2+(aq) + 2NO3-(aq) Mg(NO3)2(s)
C) Pb2+(aq) + SO4-(aq) PbSO4(aq) D) AgNO3 only
3. 20) If 200 mL of a 2.50 M NaOH solution is diluted to 500. mL, what is the new concetration of NaOH?
A) 1.00 M B) 2.50 M C) 5.95 M D) 0.441 M
21) What is the mass of ethanol, C2H5OH, is required to produce 200. mL of 0.500 M solution?
A) 4.6g B) 6.91 g C) 92.1 M D) 13.8 g
22) Which one of the following substances is predicted to be soluble in water?
A) PbSO4 B) Mo(NO3)2 C) FeS D) Mg(OH)2
23) Which of the following are soluble? (i) BaSO4 (ii) AgBr (iii) Sr(NO3)2 (iv) Na2CO3
A) iv only B) iii only C) iii and iv D) i, iii, and iv
24) Lithium and nitrogen react in a combination reaction to produce lithium nitride:
6Li (s) + N2 (g) 2Li3N (s)
How many moles of lithium nitride are produced when .450mol of lithium react in this fashion?
A) .225 B) .900 C) 1.35 D) .150 E).0750
25) Lithium and nitrogen react in a combination reaction to produce lithium nitride:
6Li (s) + N2 (g) 2Li3N (s)
In a particular experiment, 3.50g samples of each reagent are reacted. The theoretical yield of
lithium nitride is _________g.
A) 2.93 B) 17.6 C) 5.85 D) 3.52 E) 8.70
26) Lithium and nitrogen react in a combination reaction to produce lithium nitride:
Li (s) + N2 (g) Li3N (s)
In a particular experiment, 3.50g samples of each reagent are reacted. What is the limiting
reagent?
A) Li B) N2 C) Li3N D) no reagent is limiting
27) Lithium and nitrogen react in a combination reaction to produce lithium nitride:
Li (s) + N2 (g) Li3N (s)
In a particular experiment, 3.50g samples of each reagent are reacted. If the yield was 50%, the
number of grams of lithium nitride would be _________.
A) 2.93 B) 17.6 C) 5.85 D) 3.52
Bonus Question – Nomenclature
1. NaN3 (g)_____________________ 6. Barium Carbonate___________________
2. CH4 (g)______________________ 7. Ethanol ___________________________
3.HgS (s) ______________________ 8. Calcium bicarbonate ________________
4. 4. CH3OH (l) ___________________ 9. Ammonia _________________________
5. Ag+ _________________________ 10. HydroIodic Acid ______________
Answer Key
1. D
2. E
3. C
4. E
5. A
6. A
7. A
8. D
9. D
10. A
11. C
12. D
13. A
14. D
15. B
16. A
17. B
18. C
19. C
20. A
21. A
22. B
23. C
24. D
25. C
26. A
27. A