Question 1

Which of the following structure is an acceptable bond line formula for CH3CHClCHCH2?

Accepted Answer

A) I 
B) I and IV 
C) II and III 
D) I,II,and III 
E) All of these choices. 
A) I 
B) I and IV 
C) II and III 
D) I,II,and III 
E) All of these choices.

Question 2

The bond angle for the C-P-C bonds in (C6H5)3P would be expected to be approximately:

Accepted Answer

A) 60S1U1P1$\circ$S1S1P0 
B) 90S1U1P1$\circ$S1S1P0 
C) 109S1U1P1$\circ$S1S1P0 
D) 120S1U1P1$\circ$S1S1P0 
E) 180S1U1P1$\circ$S1S1P0 
A) 60S1U1P1$\circ$S1S1P0 
B) 90S1U1P1$\circ$S1S1P0 
C) 109S1U1P1$\circ$S1S1P0 
D) 120S1U1P1$\circ$S1S1P0 
E) 180S1U1P1$\circ$S1S1P0

Question 3

What would be the spatial arrangement of the atoms of the ozone molecule (O3)?

Accepted Answer

A) linear 
B) angular 
C) trigonal planar 
D) trigonal pyramidal 
E) tetrahedral 
A) linear 
B) angular 
C) trigonal planar 
D) trigonal pyramidal 
E) tetrahedral

Question 4

Contributing resonance structures cannot have contributors whose sigma bonds have been broken.

Accepted Answer

A) True 
 B)False

Question 5

Define an orbital.

Accepted Answer

A region of space wh

Question 6

In quantum mechanics a node (nodal surface or plane)is

Accepted Answer

A) a place where $\varPsi$  is negative. 
B) a place where $\varPsi$  is positive. 
C) a place where $\varPsi$  = 0. 
D) a place where $\varPsi$ 2 is large. 
E) a place where $\varPsi$ 2 is negative. 
A) a place where $\varPsi$  is negative. 
B) a place where $\varPsi$  is positive. 
C) a place where $\varPsi$  = 0. 
D) a place where $\varPsi$ 2 is large. 
E) a place where $\varPsi$ 2 is negative.

Question 7

The bond angle for the C-C-O bonds in the following molecule would be expected to be approximately:

Accepted Answer

A) 90S1U1P1$\circ$S1S1P0 
B) 109S1U1P1$\circ$S1S1P0 
C) 120S1U1P1$\circ$S1S1P0 
D) 145S1U1P1$\circ$S1S1P0 
E) 180S1U1P1$\circ$S1S1P0 
A) 90S1U1P1$\circ$S1S1P0 
B) 109S1U1P1$\circ$S1S1P0 
C) 120S1U1P1$\circ$S1S1P0 
D) 145S1U1P1$\circ$S1S1P0 
E) 180S1U1P1$\circ$S1S1P0

Question 8

Which molecule contains an sp-hybridized carbon?

Accepted Answer

A) HCN 
B) CH2=CH2 
C) CH3Cl 
D)    
E) CH3CH3 
A) HCN 
B) CH2=CH2 
C) CH3Cl 
D)    
E) CH3CH3

Question 9

The C4-C5 carbon-carbon bond in the following molecule results from the overlap of which orbitals (in the order C4-C5)?

Accepted Answer

A) sp-sp2 
B) sp-sp3 
C) sp2-sp2 
D) sp2-sp3 
E) sp3-sp2 
A) sp-sp2 
B) sp-sp3 
C) sp2-sp2 
D) sp2-sp3 
E) sp3-sp2

Question 10

The modern definition of organic chemistry is ___.

Accepted Answer

the study

Question 11

Which of the following is the Lewis structure for CH3CH2O2H?

Accepted Answer

A)    
B)    
C)    
D)    
E) None of these choices. 
A)    
B)    
C)    
D)    
E) None of these choices.

Question 12

Which molecule has the shortest carbon-carbon single bond?

Accepted Answer

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

Question 13

In which molecule(s)can the molecular geometry be attributed to an sp2 hybridized central atom?

Accepted Answer

A) PBr3 
B) CH4 
C) CHCl3 
D) HNO2 
E) None of these choices has an sp2 hybridized central atom. 
A) PBr3 
B) CH4 
C) CHCl3 
D) HNO2 
E) None of these choices has an sp2 hybridized central atom.

Question 14

What is the geometry around the N in the following molecule?

Accepted Answer

A) tetrahedral 
B) trigonal pyramidal 
C) linear 
D) bent 
E) trigonal planar 
A) tetrahedral 
B) trigonal pyramidal 
C) linear 
D) bent 
E) trigonal planar

Question 15

Nonbonding lone electron pairs exist in the unhybridized orbitals of an atom.

Accepted Answer

A) True 
 B)False

Question 16

Which of the following would have a trigonal planar (or triangular)structure?

Accepted Answer

A) I,II,and IV 
B) II and IV 
C) IV 
D) II,IV,and V 
E) All of these choices. 
A) I,II,and IV 
B) II and IV 
C) IV 
D) II,IV,and V 
E) All of these choices.

Question 17

The bond angle for the C-C-N bonds in CH3CN would be expected to be approximately:

Accepted Answer

A) 90S1U1P1$\circ$S1S1P0 
B) 109S1U1P1$\circ$S1S1P0 
C) 120S1U1P1$\circ$S1S1P0 
D) 145S1U1P1$\circ$S1S1P0 
E) 180S1U1P1$\circ$S1S1P0 
A) 90S1U1P1$\circ$S1S1P0 
B) 109S1U1P1$\circ$S1S1P0 
C) 120S1U1P1$\circ$S1S1P0 
D) 145S1U1P1$\circ$S1S1P0 
E) 180S1U1P1$\circ$S1S1P0

Question 18

Which of the following is/are not a resonance form(s)of the species in the box?

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
E) More than two of these choices are incorrect resonance forms. 
A) I 
B) II 
C) III 
D) IV 
E) More than two of these choices are incorrect resonance forms.

Question 19

Expansion of the valence shell to accommodate more than eight electrons is possible with ___.

Accepted Answer

A) fluorine 
B) nitrogen 
C) carbon 
D) sulfur 
E) beryllium 
A) fluorine 
B) nitrogen 
C) carbon 
D) sulfur 
E) beryllium

Question 20

The formal charge on sulfur in sulfuric acid is:

Accepted Answer

A) 0 
B) -1 
C) +1 
D) -2 
E) +2 
A) 0 
B) -1 
C) +1 
D) -2 
E) +2

Exam 1: The Basics

Which of the following structure is an acceptable bond line formula for CH3CHClCHCH2?

The bond angle for the C-P-C bonds in (C6H5)3P would be expected to be approximately:

What would be the spatial arrangement of the atoms of the ozone molecule (O3)?

Contributing resonance structures cannot have contributors whose sigma bonds have been broken.

Define an orbital.

In quantum mechanics a node (nodal surface or plane)is

The bond angle for the C-C-O bonds in the following molecule would be expected to be approximately:

Which molecule contains an sp-hybridized carbon?

The C4-C5 carbon-carbon bond in the following molecule results from the overlap of which orbitals (in the order C4-C5)?

The modern definition of organic chemistry is ___.

Which of the following is the Lewis structure for CH3CH2O2H?

Which molecule has the shortest carbon-carbon single bond?

In which molecule(s)can the molecular geometry be attributed to an sp2 hybridized central atom?

What is the geometry around the N in the following molecule?

Nonbonding lone electron pairs exist in the unhybridized orbitals of an atom.

Which of the following would have a trigonal planar (or triangular)structure?

The bond angle for the C-C-N bonds in CH3CN would be expected to be approximately:

Which of the following is/are not a resonance form(s)of the species in the box?

Expansion of the valence shell to accommodate more than eight electrons is possible with ___.

The formal charge on sulfur in sulfuric acid is:

Families of Carbon

Acids and Bases

Nomenclature and Conformations of Alkanes and Cycloalkanes

Stereochemistry

Nucleophilic Reactions

Alkenes and Alkynes I

Alkenes and Alkynes II

Nuclear Magnetic Resonance and Mass Spectrometry

Radical Reactions

Alcohols and Ethers

Alcohols From Carbonyl Compounds

Conjugated Unsaturated Systems

Aromatic Compounds

Reactions of Aromatic Compounds

Aldehydes and Ketones

Carboxylic Acids and Their Derivatives

Reactions at the Α Carbon of Carbonyl Compounds

Condensation and Conjugate Addition Reactions of Carbonyl Compounds

Amines

Transition Metal Complexes

Carbohydrates

Lipids

Amino Acids and Proteins

Nucleic Acids and Protein Synthesis

Filters

Which of the following structure is an acceptable bond line formula for CH₃CHClCHCH₂?

The bond angle for the C-P-C bonds in (C₆H₅)₃P would be expected to be approximately:

What would be the spatial arrangement of the atoms of the ozone molecule (O₃)?

Which of the following is the Lewis structure for CH₃CH₂O₂H?

In which molecule(s)can the molecular geometry be attributed to an sp² hybridized central atom?

The bond angle for the C-C-N bonds in CH₃CN would be expected to be approximately: