CHEM 219 MODULE 5 ACTUAL EXAM
PAPER 2026 QUESTIONS WITH ANSWERS
GRADED A+
◍ Staggered vs. Eclipsed Conformers.
Answer: Staggered are generally more stable, because of the removed
repulsion that occurs when electrons are aligned on top of each other in an
eclipsed.
◍ Nitrile.
Answer: structural form
◍ What does it mean that the C C triple bonds in aromatic rings are
conjugated?.
Answer: They are separated by only one C-C sigma bond. So that i can
repeat itself.
◍ Carboxylic Acid.
Answer: structural form
◍ What is an alkyne?.
Answer: unsaturated hydrocarbon with at least one triple bond
◍ Thoiether.
Answer: Structural form
◍ What is torsional strain?.
Answer: When cyclic molecules must assume conformations that have
eclipsed interactions
◍ Alkyne.
Answer: structural form
◍ Phenol.
, Answer: Aromatic compound
◍ Ether.
Answer: structural form
◍ What is angle strain?.
Answer: When bond angles deviate from their ideal values by being
stretched or compressed
◍ Alkene.
Answer: structural form
◍ How do you name newman projections?.
Answer: Find the first carbon chain, attach it to the front carbon. The rest are
substituents. Then attach it to the back carbon. Then attach the first carbon
chain, the rest are substituents.
◍ Amine.
Answer: structural form
◍ Aldehyde.
Answer: structural form
◍ Ketone.
Answer: structural form
◍ What happens in combustion (oxidation).
Answer: Burning as fuel. CH + O always makes CO2 and H2O. It is
exothermic.
◍ Benzoic Acid.
Answer: Aromatic compound
◍ What is the geometry of Benzene?.
Answer: Each of the six carbons are sp2 hybridized with 120 bonds and
trigonal planar geometry.
◍ Ester.
Answer: structural form
, ◍ What it is H-A supposed to mean in the addition of acids?.
Answer: H is the acid A is the rest H-A
◍ Aromatic.
Answer: structural form
◍ Alkyl or Aryl Halide.
Answer: Structural formulae
◍ What are heterocyclic compounds?.
Answer: Cyclic molecules in which one or more of the atoms making up the
ring are elements other than carbon.
◍ Anisole.
Answer: Aromatic compound
◍ Amide.
Answer: structural form
◍ Thoil.
Answer: structural form
◍ The triple carbon bonds of alkynes are:.
Answer: sp with linear shape. The remaining 2 p make 2 pi bonds.
◍ Name the first ten prefix of alkanes:.
Answer: Methane, ethane, propane, butane, pentane, hexane, heptane,
octane, nonane, decane.
◍ What happens in a radical halogenation reactions (substitutions)?.
Answer: This is to reintroduce reactivity into an alkane. Halogen atoms (Cl
or Br) are substituted for hydrogen atoms.The product is an alkyl halide
(haloalkane)Heat or UV light is used.
◍ Why is R chosen?.
Answer: It is not on the chart anywhere.
◍ Alcohol.
Answer: Structural form
PAPER 2026 QUESTIONS WITH ANSWERS
GRADED A+
◍ Staggered vs. Eclipsed Conformers.
Answer: Staggered are generally more stable, because of the removed
repulsion that occurs when electrons are aligned on top of each other in an
eclipsed.
◍ Nitrile.
Answer: structural form
◍ What does it mean that the C C triple bonds in aromatic rings are
conjugated?.
Answer: They are separated by only one C-C sigma bond. So that i can
repeat itself.
◍ Carboxylic Acid.
Answer: structural form
◍ What is an alkyne?.
Answer: unsaturated hydrocarbon with at least one triple bond
◍ Thoiether.
Answer: Structural form
◍ What is torsional strain?.
Answer: When cyclic molecules must assume conformations that have
eclipsed interactions
◍ Alkyne.
Answer: structural form
◍ Phenol.
, Answer: Aromatic compound
◍ Ether.
Answer: structural form
◍ What is angle strain?.
Answer: When bond angles deviate from their ideal values by being
stretched or compressed
◍ Alkene.
Answer: structural form
◍ How do you name newman projections?.
Answer: Find the first carbon chain, attach it to the front carbon. The rest are
substituents. Then attach it to the back carbon. Then attach the first carbon
chain, the rest are substituents.
◍ Amine.
Answer: structural form
◍ Aldehyde.
Answer: structural form
◍ Ketone.
Answer: structural form
◍ What happens in combustion (oxidation).
Answer: Burning as fuel. CH + O always makes CO2 and H2O. It is
exothermic.
◍ Benzoic Acid.
Answer: Aromatic compound
◍ What is the geometry of Benzene?.
Answer: Each of the six carbons are sp2 hybridized with 120 bonds and
trigonal planar geometry.
◍ Ester.
Answer: structural form
, ◍ What it is H-A supposed to mean in the addition of acids?.
Answer: H is the acid A is the rest H-A
◍ Aromatic.
Answer: structural form
◍ Alkyl or Aryl Halide.
Answer: Structural formulae
◍ What are heterocyclic compounds?.
Answer: Cyclic molecules in which one or more of the atoms making up the
ring are elements other than carbon.
◍ Anisole.
Answer: Aromatic compound
◍ Amide.
Answer: structural form
◍ Thoil.
Answer: structural form
◍ The triple carbon bonds of alkynes are:.
Answer: sp with linear shape. The remaining 2 p make 2 pi bonds.
◍ Name the first ten prefix of alkanes:.
Answer: Methane, ethane, propane, butane, pentane, hexane, heptane,
octane, nonane, decane.
◍ What happens in a radical halogenation reactions (substitutions)?.
Answer: This is to reintroduce reactivity into an alkane. Halogen atoms (Cl
or Br) are substituted for hydrogen atoms.The product is an alkyl halide
(haloalkane)Heat or UV light is used.
◍ Why is R chosen?.
Answer: It is not on the chart anywhere.
◍ Alcohol.
Answer: Structural form
