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.

B. 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. FALSE

B. TRUE

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. TRUE

B. FALSE

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. TRUE

B. FALSE

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. an aldehyde

D. a phenol

Question #9

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

A. alkene

B. ester

C. aldehyde

D. acid anhydride

Question #10

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

A. ketone

B. carboxylic acid

C. aldehyde

D. no reaction

Question #11

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

A. ethyl butanoate.

B. ethyl proponoate.

C. butyl ethanonate.

D. butyl ethanate.

Question #12

Which is a difference between butene and cyclobutene?

A. Cyclobutene is missing more hydrogens than is butene.

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

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

D. They are isomers.

Question #13

Reacting an amine with HCl will produce?

A. a salt

B. an amide plus a carboxylic acid

C. an ammonium ion and OH−

D. an amide plus HCl

Question #14

Which compound is a secondary amine?

A. CH3NHCHO

B. (CH3)2NCH2CH3

C. NH2CH2CH3

D. CH2CH(NH2)CH3

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. RCOH

C. RC(=O)R

D. RCHO

Question #16

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

A. COC

B. COH

C. CHO

D. COOH

Question #17

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

A. Alkanes have only single bonds between carbons.

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

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

D. There is more than one correct response.

Question #18

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

A. CH3(CHBr)2CH3

B. CH3CHBrCH2CH3

C. CH2CH2CH2CH3

D. CH3CH2CH2CH2Br

Question #19

Reacting an amine with an acid chloride will produce?

A. an amide plus HCl

B. an amide plus a carboxylic acid

C. a salt

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-SH

B. R-S-R

C. R-S2-R

D. R-SH2

Question #21

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

A. alkene

B. alcohol

C. carbonyl

D. ether

Question #22

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

A. ester

B. acetal

C. hemiacetal

D. salt

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