Question 1

Kevlar is produced from HOOC-C6H4-COOH and H2N-C6H4-NH2.Write the formula for Kevlar.

Accepted Answer

-(CO-C₆H<

Question 2

Which of the following compounds is most likely to undergo nucleophilic substitution by an SN2 reaction?

Accepted Answer

A) CH3CH2CH2Br 
B) (CH3CH2)3CBr 
C) CH3CH2CBr(CH3)CH3 
D) (CH3)3CBr 
A) CH3CH2CH2Br 
B) (CH3CH2)3CBr 
C) CH3CH2CBr(CH3)CH3 
D) (CH3)3CBr

Question 3

The carbonyl group occurs in all the following except

Accepted Answer

A) amides. 
B) ketones. 
C) carboxylic acids. 
D) aldehydes. 
E) phenols. 
A) amides. 
B) ketones. 
C) carboxylic acids. 
D) aldehydes. 
E) phenols.

Question 4

Which of the following refers to the secondary structure of a protein?

Accepted Answer

A) Denaturation 
B) ($\alpha$ helix) 
C) Amino acid sequence 
D) Disulfide linkages 
E) Base pairs 
A) Denaturation 
B) ($\alpha$ helix) 
C) Amino acid sequence 
D) Disulfide linkages 
E) Base pairs

Question 5

The primary structure of a peptide is   This peptide is

Accepted Answer

A) Tyr-Asn-Cys-Phe. 
B) Tyr-Glu-Cys-Phe. 
C) Phe-Asp-Cys-Tyr. 
D) Phe-Glu-Met-Tyr. 
E) Tyr-Asp-Met-Phe. 
A) Tyr-Asn-Cys-Phe. 
B) Tyr-Glu-Cys-Phe. 
C) Phe-Asp-Cys-Tyr. 
D) Phe-Glu-Met-Tyr. 
E) Tyr-Asp-Met-Phe.

Question 6

In the reaction of CH3CH2COOH with CH3NH2,what molecule is eliminated?

Accepted Answer

Question 7

When an ester is formed via a condensation reaction with elimination of water,the oxygen atom in the water molecule comes from

Accepted Answer

A) the hydroxyl group of the acid. 
B) the alcohol. 
C) the aldehyde. 
D) the carbonyl group of the acid. 
E) the solvent. 
A) the hydroxyl group of the acid. 
B) the alcohol. 
C) the aldehyde. 
D) the carbonyl group of the acid. 
E) the solvent.

Question 8

The ester CH3COO(CH2)4CH3,which is responsible for the odor of bananas,can be prepared from

Accepted Answer

A) CH3CH2OH and CH3(CH2)3COOH. 
B) CH3CHO and CH3(CH2)3CH2OH. 
C) CH3COOH and CH3(CH2)3CH2OH. 
D) CH3CHO and CH3(CH2)3COOH. 
E) CH3COOH and CH3(CH2)3CHO. 
A) CH3CH2OH and CH3(CH2)3COOH. 
B) CH3CHO and CH3(CH2)3CH2OH. 
C) CH3COOH and CH3(CH2)3CH2OH. 
D) CH3CHO and CH3(CH2)3COOH. 
E) CH3COOH and CH3(CH2)3CHO.

Question 9

When aldehydes react with Tollens reagent,

Accepted Answer

A) a red precipitate forms. 
B) a ketone is produced. 
C) silver ions are produced. 
D) an alcohol is produced. 
E) a carboxylic acid is produced. 
A) a red precipitate forms. 
B) a ketone is produced. 
C) silver ions are produced. 
D) an alcohol is produced. 
E) a carboxylic acid is produced.

Question 10

Which of the following is most volatile?

Accepted Answer

A) (CH3)2C(OH)CH3  
B) (CH3)3COH 
C) CH3CH(OH)CH2CH3  
D) CH3(CH2)3OH 
E) CH3CH2CH2CH3  
A) (CH3)2C(OH)CH3  
B) (CH3)3COH 
C) CH3CH(OH)CH2CH3  
D) CH3(CH2)3OH 
E) CH3CH2CH2CH3

Question 11

Which atom of formaldehyde,H2CO,is susceptible to attack by a nucleophilic reagent?

Accepted Answer

Question 12

The primary structure of aspartame is   This dipeptide is

Accepted Answer

A) Phe-Asp. 
B) Trp-Glu. 
C) Phe-Glu. 
D) Tyr-Glu. 
E) Tyr-Asn. 
A) Phe-Asp. 
B) Trp-Glu. 
C) Phe-Glu. 
D) Tyr-Glu. 
E) Tyr-Asn.

Question 13

The polymer that is formed from acrylonitrile is

Accepted Answer

A) teflon. 
B) orlon. 
C) cucite. 
D) polystyrene. 
E) PVC. 
A) teflon. 
B) orlon. 
C) cucite. 
D) polystyrene. 
E) PVC.

Question 14

Which of the following is a tertiary alcohol?

Accepted Answer

A) C6H5CH2OH 
B) C(CH3)3OH 
C) CH3CH2OH 
D) CH(CH3)2OH 
E) CH3(CH2)3OH 
A) C6H5CH2OH 
B) C(CH3)3OH 
C) CH3CH2OH 
D) CH(CH3)2OH 
E) CH3(CH2)3OH

Question 15

The major product of the reaction of (CH3)2CHCH(Br)CH3 with concentrated KOH in alcohol solvent is

Accepted Answer

A) 2-methyl-2-butene. 
B) 3-methyl-1-butene. 
C) 2-hydroxy-3-methylbutane. 
D) pentene. 
E) 3-methylbuatanol. 
A) 2-methyl-2-butene. 
B) 3-methyl-1-butene. 
C) 2-hydroxy-3-methylbutane. 
D) pentene. 
E) 3-methylbuatanol.

Question 16

The $\alpha$ helix results from the pairing of specific bases by hydrogen bonding.Which pairs form hydrogen bonds?

Accepted Answer

A) AT and GC 
B) AC and GC 
C) GT 
D) AT,GC,AC,and GT 
E) AC 
A) AT and GC 
B) AC and GC 
C) GT 
D) AT,GC,AC,and GT 
E) AC

Question 17

Name the compound CH3COO(CH2)4CH3.

Accepted Answer

A) Methyl pentanoate 
B) Hexanoic acid 
C) 2-hexanone 
D) Pentyl acetate 
E) Butyl acetate 
A) Methyl pentanoate 
B) Hexanoic acid 
C) 2-hexanone 
D) Pentyl acetate 
E) Butyl acetate

Question 18

Fill in the missing compounds or reagents in the following reaction scheme.
C6H5CHCH2 + ______ $\rightarrow$  C6H5CH(Br)CH3 + CH3CH2O-Na+ $\rightarrow$ ________

Accepted Answer

HBr and C₆

Question 19

The formation of an amide from a primary amine and a carboxylic acid is

Accepted Answer

A) a substitution reaction. 
B) an oxidation reaction. 
C) an addition reaction. 
D) an elimination reaction. 
E) a condensation reaction. 
A) a substitution reaction. 
B) an oxidation reaction. 
C) an addition reaction. 
D) an elimination reaction. 
E) a condensation reaction.

Question 20

The product of the reaction of CH3CH2CHO with excess KMnO4(aq)in acidic solution is

Accepted Answer

A) CH3CH2COOH. 
B) CH3CH2COCH2CH3.  
C) CH3COOH. 
D) CH3CH2CH3.  
E) CH3CH2OH. 
A) CH3CH2COOH. 
B) CH3CH2COCH2CH3.  
C) CH3COOH. 
D) CH3CH2CH3.  
E) CH3CH2OH.

Kevlar is produced from HOOC-C₆H₄-COOH and H₂N-C₆H₄-NH₂.Write the formula for Kevlar.

Which of the following compounds is most likely to undergo nucleophilic substitution by an S_N2 reaction?

The carbonyl group occurs in all the following except

Which of the following refers to the secondary structure of a protein?

The primary structure of a peptide is This peptide is

In the reaction of CH₃CH₂COOH with CH₃NH₂,what molecule is eliminated?

When an ester is formed via a condensation reaction with elimination of water,the oxygen atom in the water molecule comes from

The ester CH₃COO(CH₂)₄CH₃,which is responsible for the odor of bananas,can be prepared from

When aldehydes react with Tollens reagent,

Which of the following is most volatile?

Which atom of formaldehyde,H₂CO,is susceptible to attack by a nucleophilic reagent?

The primary structure of aspartame is This dipeptide is

The polymer that is formed from acrylonitrile is

Which of the following is a tertiary alcohol?

The major product of the reaction of (CH₃)₂CHCH(Br)CH₃ with concentrated KOH in alcohol solvent is

The $\alpha$ helix results from the pairing of specific bases by hydrogen bonding.Which pairs form hydrogen bonds?

Name the compound CH₃COO(CH₂)₄CH₃.

Fill in the missing compounds or reagents in the following reaction scheme. C₆H₅CHCH₂ + $\rightarrow$ C₆H₅CH(Br)CH₃ + CH₃CH₂O^-Na⁺ $\rightarrow$ __

The formation of an amide from a primary amine and a carboxylic acid is

The product of the reaction of CH₃CH₂CHO with excess KMnO₄(aq)in acidic solution is

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Exam 20: Organic Chemistry II

Kevlar is produced from HOOC-C6H4-COOH and H2N-C6H4-NH2.Write the formula for Kevlar.

Which of the following compounds is most likely to undergo nucleophilic substitution by an SN2 reaction?

The carbonyl group occurs in all the following except

Which of the following refers to the secondary structure of a protein?

The primary structure of a peptide is This peptide is

In the reaction of CH3CH2COOH with CH3NH2,what molecule is eliminated?

When an ester is formed via a condensation reaction with elimination of water,the oxygen atom in the water molecule comes from

The ester CH3COO(CH2)4CH3,which is responsible for the odor of bananas,can be prepared from

When aldehydes react with Tollens reagent,

Which of the following is most volatile?

Which atom of formaldehyde,H2CO,is susceptible to attack by a nucleophilic reagent?

The primary structure of aspartame is This dipeptide is

The polymer that is formed from acrylonitrile is

Which of the following is a tertiary alcohol?

The major product of the reaction of (CH3)2CHCH(Br)CH3 with concentrated KOH in alcohol solvent is

The α\alphaα helix results from the pairing of specific bases by hydrogen bonding.Which pairs form hydrogen bonds?

Name the compound CH3COO(CH2)4CH3.

Fill in the missing compounds or reagents in the following reaction scheme. C6H5CHCH2 + ______ →\rightarrow→ C6H5CH(Br)CH3 + CH3CH2O-Na+ →\rightarrow→ ________

The formation of an amide from a primary amine and a carboxylic acid is

The product of the reaction of CH3CH2CHO with excess KMnO4(aq)in acidic solution is

The Quantum World

Quantum Mechanics in Action: Atoms

Chemical Bonds

Molecular Shape and Structure

The Properties of Gases

Liquids and Solids

Inorganic Materials

Thermodynamics: The First Law

Thermodynamics: The Second and Third Laws

Physical Equilibria

Chemical Equilibria

Acids and Bases

Aqueous Equilibria

Electrochemistry

Chemical Kinetics

The Elements: the Main Group Elements

The Elements: The D Block

Nuclear Chemistry

Organic Chemistry I

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Kevlar is produced from HOOC-C₆H₄-COOH and H₂N-C₆H₄-NH₂.Write the formula for Kevlar.

Which of the following compounds is most likely to undergo nucleophilic substitution by an S_N2 reaction?

In the reaction of CH₃CH₂COOH with CH₃NH₂,what molecule is eliminated?

The ester CH₃COO(CH₂)₄CH₃,which is responsible for the odor of bananas,can be prepared from

Which atom of formaldehyde,H₂CO,is susceptible to attack by a nucleophilic reagent?

The major product of the reaction of (CH₃)₂CHCH(Br)CH₃ with concentrated KOH in alcohol solvent is

The $\alpha$ helix results from the pairing of specific bases by hydrogen bonding.Which pairs form hydrogen bonds?

Name the compound CH₃COO(CH₂)₄CH₃.

Fill in the missing compounds or reagents in the following reaction scheme. C₆H₅CHCH₂ + $\rightarrow$ C₆H₅CH(Br)CH₃ + CH₃CH₂O^-Na⁺ $\rightarrow$ __

The product of the reaction of CH₃CH₂CHO with excess KMnO₄(aq)in acidic solution is