Chem 219 Module 2 Actual Exam Latest Update

Chem 219 Module 2 Actual Exam Latest Update

• 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

• / 2

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.

• / 2