CHEM 219 MODULES 1–8 EXAMS &
FINAL EXAM – PRINCIPLES OF
ORGANIC CHEMISTRY (2026/2027) |
PORTAGE LEARNING – VERIFIED Q&A
|2026 UPLOAD |ALREADY GRADED A+
1. What is the definition of heat capacity in the context of thermodynamics?
The amount of heat required to raise the temperature of a
substance by one degree Celsius.
The total energy contained within a substance.
The temperature at which a substance changes from solid to liquid.
The measure of a substance's ability to conduct heat.
2. What intermolecular force is generally considered the strongest?
Hydrogen bonding
London dispersion
Dipole Dipole
3. If you have 24 grams of carbon (C), which has an atomic mass of
approximately 12 g/mol, how many moles of carbon do you have?
0.5 moles
1 mole
2 moles
, 3 moles
4. Explain how to determine the mass percent of a solute in a solution using
the example of 13.2g MgBr2 in 539g H2O.
Add the mass of solute and solvent, then divide the mass of
solute by this total and multiply by 100.
Divide the mass of solute by the mass of solvent and multiply by
100.
, Subtract the mass of solute from the mass of solvent, then divide by
the mass of solute and multiply by 100.
Multiply the mass of solute by the mass of solvent, then divide by
the total mass and multiply by 100.
5. What is the formula used to calculate the concentration of a solution?
Concentration = moles of solute / volume of solution
Concentration = mass of solute / volume of solution
Concentration = moles of solute / mass of solvent
Concentration = volume of solute / moles of solution
6. Explain how the pOH of a solution is related to its pH and the
concentration of hydronium ions.
pOH is the negative logarithm of the hydronium ion
concentration and is inversely related to pH.
pOH is calculated by adding the pH to the concentration of
hydronium ions.
pOH is equal to the concentration of hydroxide ions in the solution.
pOH and pH are independent of each other and do not affect the
acidity of the solution.
7. Explain why the combination of acetic acid (CH3CO2H) and potassium
acetate (CH3CO2K) acts as a buffer solution. What role does each
component play?
a) Acetic acid acts as a strong acid, while potassium acetate acts as
a weak base.
b) Acetic acid is a weak acid that can donate protons, and
potassium acetate provides the conjugate base.
c) Both components are strong acids that neutralize each other.
FINAL EXAM – PRINCIPLES OF
ORGANIC CHEMISTRY (2026/2027) |
PORTAGE LEARNING – VERIFIED Q&A
|2026 UPLOAD |ALREADY GRADED A+
1. What is the definition of heat capacity in the context of thermodynamics?
The amount of heat required to raise the temperature of a
substance by one degree Celsius.
The total energy contained within a substance.
The temperature at which a substance changes from solid to liquid.
The measure of a substance's ability to conduct heat.
2. What intermolecular force is generally considered the strongest?
Hydrogen bonding
London dispersion
Dipole Dipole
3. If you have 24 grams of carbon (C), which has an atomic mass of
approximately 12 g/mol, how many moles of carbon do you have?
0.5 moles
1 mole
2 moles
, 3 moles
4. Explain how to determine the mass percent of a solute in a solution using
the example of 13.2g MgBr2 in 539g H2O.
Add the mass of solute and solvent, then divide the mass of
solute by this total and multiply by 100.
Divide the mass of solute by the mass of solvent and multiply by
100.
, Subtract the mass of solute from the mass of solvent, then divide by
the mass of solute and multiply by 100.
Multiply the mass of solute by the mass of solvent, then divide by
the total mass and multiply by 100.
5. What is the formula used to calculate the concentration of a solution?
Concentration = moles of solute / volume of solution
Concentration = mass of solute / volume of solution
Concentration = moles of solute / mass of solvent
Concentration = volume of solute / moles of solution
6. Explain how the pOH of a solution is related to its pH and the
concentration of hydronium ions.
pOH is the negative logarithm of the hydronium ion
concentration and is inversely related to pH.
pOH is calculated by adding the pH to the concentration of
hydronium ions.
pOH is equal to the concentration of hydroxide ions in the solution.
pOH and pH are independent of each other and do not affect the
acidity of the solution.
7. Explain why the combination of acetic acid (CH3CO2H) and potassium
acetate (CH3CO2K) acts as a buffer solution. What role does each
component play?
a) Acetic acid acts as a strong acid, while potassium acetate acts as
a weak base.
b) Acetic acid is a weak acid that can donate protons, and
potassium acetate provides the conjugate base.
c) Both components are strong acids that neutralize each other.
