ATDH Organic Chemistry Fundamentals 3

Question 1

What are the products when a carboxylic acid reacts with an alcohol in the presence of an acid catalyst?

Accepted Answer

An ester and water

Answer

A ketone and hydrogen gas

Answer

An aldehyde and water

Answer

An ether and carbon dioxide

Question 2

Enantiomers are best described as stereoisomers that are:

Accepted Answer

Non-superimposable mirror images of each other

Answer

Constitutional isomers with the same boiling point

Answer

Identical in all chemical and physical properties

Answer

Geometric isomers that differ only in rotation

Question 3

Which statement about aromatic compounds is FALSE?

Accepted Answer

They readily undergo addition reactions

Answer

They contain a cyclic ring with delocalized pi electrons

Answer

They satisfy Hückel's rule (4n+2 π electrons)

Answer

They are stabilized by resonance

Question 4

What is saponification?

Accepted Answer

Base-catalyzed hydrolysis of an ester to form soap

Answer

Acid-catalyzed formation of a peptide bond

Answer

Acid-catalyzed esterification of a fatty acid

Answer

Oxidation of an aldehyde to a carboxylic acid

Question 5

What is the hybridization of the carbon atom in a carbonyl group (C=O)?

Accepted Answer

sp2

Answer

sp3

Answer

sp

Answer

d2sp3

Question 6

According to Markovnikov's rule, when HBr adds to an unsymmetrical alkene, where does the bromine atom attach?

Accepted Answer

To the carbon bearing the fewest hydrogen atoms (more substituted carbon)

Answer

To the carbon bearing the most hydrogen atoms

Answer

Randomly to either carbon of the double bond

Answer

Only to the terminal carbon regardless of substitution

Question 7

In organic structural formulas, what does the symbol 'R' conventionally represent?

Accepted Answer

An alkyl group or generic organic substituent

Answer

A ring structure only

Answer

A reactive functional group site

Answer

A radical species