CHEM 219 Modules 1–8 Exams & Final
Exam – Principles of Organic Chemistry
(2026/2027) | Portage Learning – Verified
Q&A |already graded A+ |2026 latest upload
|100% correct
1. Explain why NaOH(aq) is considered a solution while NaOH(l) is not. What
distinguishes an aqueous solution from a liquid state?
NaOH(aq) contains dissolved ions, while NaOH(l) is a pure liquid.
NaOH(aq) is a gas, while NaOH(l) is a solid.
NaOH(aq) is less concentrated than NaOH(l).
NaOH(aq) is a mixture of gases.
2. If you have a compound containing nitrogen with an oxidation state of +5,
what type of compound is it likely to be, and what is a possible reaction
involving this compound?
It is likely a nitrogen oxide, and it can react with water to form
nitric acid.
It is likely an amine, and it can react with an alcohol to form an
ether.
It is likely a nitrogen halide, and it can react with a metal to form a
salt.
It is likely a nitrogen hydride, and it can react with oxygen to
produce nitrogen gas.
,3. If you have a 2.0 g sample of acetic acid, how many hydrogen atoms would
be present in that sample? (Use the molar mass of acetic acid as 60.06
g/mol)
5.0x10^21 atoms of H
1.0x10^22 atoms of H
1.7x10^22 atoms of H
2.0x10^22 atoms of H
, 4. Which ionic compound formula is paired INCORRECTLY with its name?
CaF2; calcium fluoride
CrO5; chromium (II) oxide
FeCl3; Iron (III) chloride
K2O; Potassium oxide
5. What is the formula used to calculate the mass of a solute needed to
prepare a solution?
Mass = Molarity × Volume × Molar Mass
Mass = Molarity / Volume
Mass = Volume / Molarity
Mass = Molar Mass / Molarity
6. If an atom has 6 protons and 6 neutrons in its nucleus, what can be inferred
about its overall charge and atomic identity?
The atom is neutral and is carbon.
The atom is positively charged and is carbon.
The atom is negatively charged and is oxygen.
The atom is neutral and is oxygen.
7. What is the molarity of the potassium oxalate solution (K2C2O4) used in
the reaction with iron(III) nitrate (Fe(NO3)3)?
0.100 M
0.200 M
0.300 M
0.150 M
Exam – Principles of Organic Chemistry
(2026/2027) | Portage Learning – Verified
Q&A |already graded A+ |2026 latest upload
|100% correct
1. Explain why NaOH(aq) is considered a solution while NaOH(l) is not. What
distinguishes an aqueous solution from a liquid state?
NaOH(aq) contains dissolved ions, while NaOH(l) is a pure liquid.
NaOH(aq) is a gas, while NaOH(l) is a solid.
NaOH(aq) is less concentrated than NaOH(l).
NaOH(aq) is a mixture of gases.
2. If you have a compound containing nitrogen with an oxidation state of +5,
what type of compound is it likely to be, and what is a possible reaction
involving this compound?
It is likely a nitrogen oxide, and it can react with water to form
nitric acid.
It is likely an amine, and it can react with an alcohol to form an
ether.
It is likely a nitrogen halide, and it can react with a metal to form a
salt.
It is likely a nitrogen hydride, and it can react with oxygen to
produce nitrogen gas.
,3. If you have a 2.0 g sample of acetic acid, how many hydrogen atoms would
be present in that sample? (Use the molar mass of acetic acid as 60.06
g/mol)
5.0x10^21 atoms of H
1.0x10^22 atoms of H
1.7x10^22 atoms of H
2.0x10^22 atoms of H
, 4. Which ionic compound formula is paired INCORRECTLY with its name?
CaF2; calcium fluoride
CrO5; chromium (II) oxide
FeCl3; Iron (III) chloride
K2O; Potassium oxide
5. What is the formula used to calculate the mass of a solute needed to
prepare a solution?
Mass = Molarity × Volume × Molar Mass
Mass = Molarity / Volume
Mass = Volume / Molarity
Mass = Molar Mass / Molarity
6. If an atom has 6 protons and 6 neutrons in its nucleus, what can be inferred
about its overall charge and atomic identity?
The atom is neutral and is carbon.
The atom is positively charged and is carbon.
The atom is negatively charged and is oxygen.
The atom is neutral and is oxygen.
7. What is the molarity of the potassium oxalate solution (K2C2O4) used in
the reaction with iron(III) nitrate (Fe(NO3)3)?
0.100 M
0.200 M
0.300 M
0.150 M
