Chem 219 Module 2 Actual Exam Latest Update 2024-2025 150 Questions and 100% Verified Correct Answers Guaranteed A+
Alkanes are relatively ______ - CORRECT ANSWER: inert (unreactive) under most
conditions.
Alkanes can adopt different conformations, What does this mean? - CORRECT
ANSWER: This means that it can change shapes as it can rotate around bonds.
Alkanes can be used as ______ - CORRECT ANSWER: Solvents due to being inert.
Aniline - CORRECT ANSWER: benzene with NH2
Anisole - CORRECT ANSWER: benzene with OCH3
Are alkanes polar or non-polar? - CORRECT ANSWER: Almost non-polar
Are alkanes soluble in water? - CORRECT ANSWER: They are water-insoluble.
Are liquid alkanes used as solvents? - CORRECT ANSWER: Yes for other non polar
substances.
As the molecular weight increases: - CORRECT ANSWER: The number of isomers increase.
Benzaldehyde - CORRECT ANSWER: benzene with CHO
Benzoic acid - CORRECT ANSWER: C6H5COOH
Butyl or n-butyl - CORRECT ANSWER: -CH2CH2CH2CH3
Can conformers be isolated at room temp? - CORRECT ANSWER: No, because theres
a lot of thermal energy, it starts the rapid inter conversion of conformers. Meaning it rotates back and forth
Certain conformers are called rotamers, why? - CORRECT ANSWER: They can simply
be rotated into the other conformer. Used with newman projections
Chlorinated vs Bromination? - CORRECT ANSWER: When Chlorine is used and when
Bromine is used.
Compared to alkanes, alkenes are? (shape) - CORRECT ANSWER: Flat
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Cycloalkanes that have 1 ring has the general formula of? - CORRECT ANSWER:
Cn+H2n
Cyclobutane forms a puckered confirmation. - CORRECT ANSWER:
Cyclopentane adopts an envelope confirmation. - CORRECT ANSWER:
Describe a higher/more complex alkane structure: - CORRECT ANSWER: They will have more carbons and/or increased structural diversity.
For cis/trans steroisomerism, each carbon of the C=C must have how many
atoms/groups attached to it? - CORRECT ANSWER: 2 different atoms or groups
Functional group: Alcohol - CORRECT ANSWER: Contain oxygen
Example:
Ethyl Alcohol (ethanol)- Alcohol found in wine, beer R-OH
Functional group: Aldehyde - CORRECT ANSWER: Contain oxygen
Example:
Formaldehyde- sometimes used as a biological preservative.
Functional group: Alkene - CORRECT ANSWER: C=C
Functional group: Alkyl or Aryl Halide. - CORRECT ANSWER: Example: CH3Cl Methyl Chloride- local anesthetic R-X X can be F, Cl, Br, I
Functional group: Alkynes - CORRECT ANSWER: triple bond
Functional group: Amide - CORRECT ANSWER: Contain nitrogen
Example:
Ethanamide-a solvent and plasticizer.
Functional group: Amine - CORRECT ANSWER: Contain nitrogen
Example:
Ethylamine: a precursor to certain herbicides
Can be NH2
Functional group: Aromatic - CORRECT ANSWER: Benzene ring
Functional group: Carboxylic Acid - CORRECT ANSWER: Contain oxygen
Example:
Acetic Acid- Organic component of vinegar.
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