Question 1

Draw the curved arrow(s) for converting the first resonance structure into the second resonance structure.

Accepted Answer

The answer of Draw the curved arrow(s) for converting the...

Question 2

Which of the following is a correct resonance structure for compound A?

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  IV 
E)  none of these 
A)  I 
B)  II 
C)  III 
D)  IV 
E)  none of these

Question 3

The lone pair on nitrogen in the following compound is _______.

Accepted Answer

A)  localized 
B)  delocalized 
A)  localized 
B)  delocalized

Question 4

Draw all the constitutional isomers with a molecular formula of C3H6O and label the functional groups in each isomer.

Accepted Answer

@#IMG-DLM&_TB4454_00

Question 5

Which of the following is/are the most significant resonance structure(s)?

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  I and III 
E)  all of these 
A)  I 
B)  II 
C)  III 
D)  I and III 
E)  all of these

Question 6

How many hydrogen atoms are connected to the indicated carbon atom?

Accepted Answer

A)  one 
B)  two 
C)  three 
D)  four 
E)  none 
A)  one 
B)  two 
C)  three 
D)  four 
E)  none

Question 7

Which of the following violates the rules for curved arrows?

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  IV 
E)  none of these 
A)  I 
B)  II 
C)  III 
D)  IV 
E)  none of these

Question 8

Draw the resonance hybrid for the following structure.

Accepted Answer

The answer of Draw the resonance hybrid for the following...

Question 9

Which of the following is the most significant resonance structure?

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  IV 
E)  None of these 
A)  I 
B)  II 
C)  III 
D)  IV 
E)  None of these

Question 10

Diazomethane has the molecular formula CH2N2. Draw the preferred Lewis structure for diazomethane and assign formal charges to all atoms except hydrogen.

Accepted Answer

Question 11

Which of the following is the correct bond-line structure for CH3CHOH(CH2)2CH(CH2CH3) 2?

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  IV 
E)  V 
A)  I 
B)  II 
C)  III 
D)  IV 
E)  V

Question 12

Draw a bond-line structure for each constitutional isomer with molecular formula C4H10O.

Accepted Answer

@#IMG-DLM&_TB4454_00

Question 13

For the following equation, how many hydrogen atoms are added or lost?

Accepted Answer

A)  added one 
B)  added two 
C)  lost one 
D)  lost two 
E)  no change 
A)  added one 
B)  added two 
C)  lost one 
D)  lost two 
E)  no change

Question 14

Provide a condensed structure for the following compound.

Accepted Answer

(CH₃)₃CCH₂CH(

Question 15

How many lone pairs of electrons are on the oxygen atom?

Accepted Answer

A)  one 
B)  two 
C)  three 
D)  four 
E)  none 
A)  one 
B)  two 
C)  three 
D)  four 
E)  none

Question 16

Which of the following is the correct bond-line structure for (CH3)4C?

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  IV 
E)  None of these 
A)  I 
B)  II 
C)  III 
D)  IV 
E)  None of these

Question 17

How many hydrogen atoms are connected to the indicated carbon atom?

Accepted Answer

A)  one 
B)  two 
C)  three 
D)  four 
E)  none 
A)  one 
B)  two 
C)  three 
D)  four 
E)  none

Question 18

Provide the curved arrow(s) to draw a resonance structure for the following compound.

Accepted Answer

The answer of Provide the curved arrow(s) to draw a...

Question 19

Draw two resonance structures for HN3.

Accepted Answer

Question 20

The lone pair on oxygen in the following compound is _______.

Accepted Answer

A)  both localized 
B)  both delocalized 
C)  one localized and one delocalized 
A)  both localized 
B)  both delocalized 
C)  one localized and one delocalized

Exam 2: Molecular Representations

Draw the curved arrow(s) for converting the first resonance structure into the second resonance structure.

Which of the following is a correct resonance structure for compound A?

The lone pair on nitrogen in the following compound is _______.

Draw all the constitutional isomers with a molecular formula of C3H6O and label the functional groups in each isomer.

Which of the following is/are the most significant resonance structure(s)?

How many hydrogen atoms are connected to the indicated carbon atom?

Which of the following violates the rules for curved arrows?

Draw the resonance hybrid for the following structure.

Which of the following is the most significant resonance structure?

Diazomethane has the molecular formula CH2N2. Draw the preferred Lewis structure for diazomethane and assign formal charges to all atoms except hydrogen.

Which of the following is the correct bond-line structure for CH3CHOH(CH2)2CH(CH2CH3) 2?

Draw a bond-line structure for each constitutional isomer with molecular formula C4H10O.

For the following equation, how many hydrogen atoms are added or lost?

Provide a condensed structure for the following compound.

How many lone pairs of electrons are on the oxygen atom?

Which of the following is the correct bond-line structure for (CH3)4C?

How many hydrogen atoms are connected to the indicated carbon atom?

Provide the curved arrow(s) to draw a resonance structure for the following compound.

Draw two resonance structures for HN3.

The lone pair on oxygen in the following compound is _______.

A Review of General Chemistry: Electrons, Bonds, and Molecular Properties

Acids and Bases

Alkanes and Cycloalkanes

Stereoisomerism

Chemical Reactivity and Mechanisms

Alkyl Halides: Nucleophilic Substitution and Elimination Reactions

Addition Reactions of Alkenes

Alkynes

Radical Reactions

Synthesis

Alcohols and Phenols

Ethers and Epoxides; Thiols and Sulfides

Infrared Spectroscopy and Mass Spectrometry

Nuclear Magnetic Resonance Spectroscopy

Conjugated Pi Systems and Pericyclic Reactions

Aromatic Compounds

Aromatic Substitution Reactions

Aldehydes and Ketones

Carboxylic Acids and Their Derivatives

Alpha Carbon Chemistry: Enols and Enolates

Amines

Introduction to Organometallic Compounds

Carbohydrates

Amino Acids, Peptides, and Proteins

Lipids

Synthetic Polymers

Filters

Draw all the constitutional isomers with a molecular formula of C₃H₆O and label the functional groups in each isomer.

Diazomethane has the molecular formula CH₂N₂. Draw the preferred Lewis structure for diazomethane and assign formal charges to all atoms except hydrogen.

Which of the following is the correct bond-line structure for CH₃CHOH(CH₂)₂CH(CH₂CH₃)₂?

Draw a bond-line structure for each constitutional isomer with molecular formula C₄H₁₀O.

Which of the following is the correct bond-line structure for (CH₃)₄C?

Draw two resonance structures for HN₃.