West Los Angeles College » Chemistry » Chem 051 - Fundamentals of Chemistry » Winter 2021

Chem 051 - Fundamentals of Chemistry » Winter 2021 » Homework GOB Week 5

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Question #1

Based on the IUPAC name, N,N-dimethylaniline is a secondary amine.

A. FALSE

C. TRUE

Question #2

Markovnikov's rule indicates that in the addition of H-X to an alkene, the hydrogen becomes attached to the carbon atom that is already bonded to more hydrogens.

A. TRUE

B. FALSE

Question #3

2-butyne can exist as cis- and trans- isomers.

A. FALSE

B. TRUE

Question #4

Mercaptan is another name for a thiol.

A. TRUE

B. FALSE

Question #5

When naming aldehydes, the aldehyde group is at position number 1.

A. FALSE

B. TRUE

Question #6

To prepare a ketone, one should oxidize a secondary alcohol.

A. TRUE

B. FALSE

Question #7

1-amino-2-methylpropane is a secondary amine.

A. FALSE

B. TRUE

Question #8

In the IUPAC nomenclature system, the name of which of the following would end in "-al"?

A. an alcohol

B. an alkane

C. a phenol

D. an aldehyde

Question #9

What would be produced as the result of reaction between a carboxylic acid and an alcohol?

A. acid anhydride

B. ester

C. aldehyde

D. alkene

Question #10

Oxidation of a tertiary alcohol will produce a(n) ____.

A. no reaction

B. carboxylic acid

C. ketone

D. aldehyde

Question #11

The IUPAC name of the ester formed from butanoic acid and ethanol is

A. butyl ethanonate.

B. ethyl proponoate.

C. butyl ethanate.

D. ethyl butanoate.

Question #12

Which is a difference between butene and cyclobutene?

A. They are isomers.

B. The location of the double bond is terminal in cyclobutene, but between interior carbons in butene.

C. Cyclobutene is missing more hydrogens than is butene.

D. Cyclobutene has 2 double bonds, butene does not.

Question #13

Reacting an amine with HCl will produce?

A. an ammonium ion and OH−

B. a salt

C. an amide plus HCl

D. an amide plus a carboxylic acid

Question #14

Which compound is a secondary amine?

A. CH3NHCHO

B. CH2CH(NH2)CH3

C. NH2CH2CH3

D. (CH3)2NCH2CH3

Question #15

Which of the following is a condensed structural formula for an aldehyde? (Note: R is used to represent a generic alkyl chain).

A. RCOOH

B. RC(=O)R

C. RCOH

D. RCHO

Question #16

Which of the following is used to represent an organic acid?

A. COH

B. CHO

C. COOH

D. COC

Question #17

Which is a characteristic of alkenes and alkynes, but not a characteristic of alkanes?

A. Alkynes are not flammable, the others are flammable.

B. Alkanes have only single bonds between carbons.

C. There is more than one correct response.

D. Alkenes all have a scent similar to the aromatic compounds, but the alkanes and alkenes have a scent that is extremely sharp.

Question #18

Select the major product that would result from the reaction below. CH3CH2CH=CH2 + HBr → __________

A. CH3CH2CH2CH2Br

B. CH3(CHBr)2CH3

C. CH3CHBrCH2CH3

D. CH2CH2CH2CH3

Question #19

Reacting an amine with an acid chloride will produce?

A. an amide plus HCl

B. a salt

C. an amide plus a carboxylic acid

D. an ammonium ion and OH−

Question #20

Thiols create the unpleasant odor associated with a skunk. Which of the general forms below represents a thiol?

A. R-S-R

B. R-SH2

C. R-SH

D. R-S2-R

Question #21

Dehydration of an alcohol will produce a(n) ______.

A. alcohol

B. alkene

C. carbonyl

D. ether

Question #22

When a carboxylic acid reacts with alcohol, the organic product is a(n) ____.

A. acetal

B. salt

C. ester

D. hemiacetal

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