Question 1

Identify the atomic orbitals in the C-H sigma bond in acetylene.

Accepted Answer

A)  (2sp2,1s) 
B)  (2sp3,2sp3) 
C)  (2sp,2sp) 
D)  (2p,2p) 
E)  (2sp,1s) 
A)  (2sp2,1s) 
B)  (2sp3,2sp3) 
C)  (2sp,2sp) 
D)  (2p,2p) 
E)  (2sp,1s)

Question 2

The greatest degree of ionic character is anticipated for the bond between:

Accepted Answer

A)  H and C 
B)  H and Cl 
C)  C and Cl 
D)  H and Br 
E)  Br and Cl 
A)  H and C 
B)  H and Cl 
C)  C and Cl 
D)  H and Br 
E)  Br and Cl

Question 3

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

Accepted Answer

A)  60 $\degree$ 
B)  90 $\degree$ 
C)  105 $\degree$ 
D)  109 $\degree$ 
E)  120 $\degree$ 
A)  60 $\degree$ 
B)  90 $\degree$ 
C)  105 $\degree$ 
D)  109 $\degree$ 
E)  120 $\degree$

Question 4

Identify the atomic orbitals involved in the C-2---C-3 sigma bond (indicated by an arrow)in the following molecule:

Accepted Answer

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

Question 5

Which of the following structures represent compounds that are constitutional isomers of each other?

Accepted Answer

A)  I and II 
B)  I and III 
C)  I,II,and III 
D)  I,II,III,and IV 
E)  II and III 
A)  I and II 
B)  I and III 
C)  I,II,and III 
D)  I,II,III,and IV 
E)  II and III

Question 6

Draw all the isomers of C4H9Br,using bond-line formulas.

Accepted Answer

Question 7

Which of the following species contributes more to the overall hybrid for the species in the box?

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  IV 
E)  The one in the box. 
A)  I 
B)  II 
C)  III 
D)  IV 
E)  The one in the box.

Question 8

The bond that results when two atoms share a pair of electrons is called a _________________.

Accepted Answer

The answer of The bond that results when two atoms...

Question 9

According to molecular orbital theory,which molecule could not exist?

Accepted Answer

A)  H2 
B)  He2 
C)  Li2 
D)  F2 
E)  N2 
A)  H2 
B)  He2 
C)  Li2 
D)  F2 
E)  N2

Question 10

What would be the spatial arrangement (shape)of the atoms of the methyl anion,:CH3-?

Accepted Answer

A)  Octahedral 
B)  Tetrahedral 
C)  Trigonal planar 
D)  Linear 
E)  Trigonal pyramidal 
A)  Octahedral 
B)  Tetrahedral 
C)  Trigonal planar 
D)  Linear 
E)  Trigonal pyramidal

Question 11

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

Accepted Answer

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

Question 12

What is the approximate hybridization state of the oxygen molecule in ethanol,C2H5OH?

Accepted Answer

A)  sp 
B)  sp2 
C)  sp3 
D)  p3 
E)  d2sp3 
A)  sp 
B)  sp2 
C)  sp3 
D)  p3 
E)  d2sp3

Question 13

How many 2p atomic orbitals from boron must be mixed with a 2s atomic orbital to yield the bonding hybrid atomic orbitals in BF3?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  5 
A)  1 
B)  2 
C)  3 
D)  4 
E)  5

Question 14

The following electron configuration represents _______

Accepted Answer

A)  the ground state of boron. 
B)  the sp3 hybridized state of carbon. 
C)  the sp3 hybridized state of nitrogen. 
D)  the ground state of carbon. 
E)  an excited state of carbon. 
A)  the ground state of boron. 
B)  the sp3 hybridized state of carbon. 
C)  the sp3 hybridized state of nitrogen. 
D)  the ground state of carbon. 
E)  an excited state of carbon.

Question 15

Credit for the first synthesis of an organic compound from an inorganic precursor is usually given to:

Accepted Answer

A)  Berzelius 
B)  Arrhenius 
C)  Kekule 
D)  Wohler 
E)  Lewis 
A)  Berzelius 
B)  Arrhenius 
C)  Kekule 
D)  Wohler 
E)  Lewis

Question 16

Consider the following:  
Which structures can exist as cis-trans : isomers?

Accepted Answer

A)  I and II 
B)  I and III 
C)  I and IV 
D)  II and III 
E)  I alone 
A)  I and II 
B)  I and III 
C)  I and IV 
D)  II and III 
E)  I alone

Question 17

Which of the following species contributes more to the overall hybrid for the species in the box?

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  IV 
E)  The one in the box. 
A)  I 
B)  II 
C)  III 
D)  IV 
E)  The one in the box.

Question 18

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

Question 19

Which of the following species contributes more to the overall hybrid for the species in the box?

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  IV 
E)  The one in the box. 
A)  I 
B)  II 
C)  III 
D)  IV 
E)  The one in the box.

Question 20

Identify the atomic orbitals in the C-C sigma bond in ethyne.

Accepted Answer

A)  (2sp2,2sp2) 
B)  (2sp3,2sp3) 
C)  (2sp,2sp) 
D)  (2p,2p) 
E)  (2sp,1s) 
A)  (2sp2,2sp2) 
B)  (2sp3,2sp3) 
C)  (2sp,2sp) 
D)  (2p,2p) 
E)  (2sp,1s)

Exam 1: Carbon Compounds and Chemical Bonds

Identify the atomic orbitals in the C-H sigma bond in acetylene.

The greatest degree of ionic character is anticipated for the bond between:

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

Identify the atomic orbitals involved in the C-2---C-3 sigma bond (indicated by an arrow)in the following molecule:

Which of the following structures represent compounds that are constitutional isomers of each other?

Draw all the isomers of C4H9Br,using bond-line formulas.

Which of the following species contributes more to the overall hybrid for the species in the box?

The bond that results when two atoms share a pair of electrons is called a _________________.

According to molecular orbital theory,which molecule could not exist?

What would be the spatial arrangement (shape)of the atoms of the methyl anion,:CH3-?

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

What is the approximate hybridization state of the oxygen molecule in ethanol,C2H5OH?

How many 2p atomic orbitals from boron must be mixed with a 2s atomic orbital to yield the bonding hybrid atomic orbitals in BF3?

The following electron configuration represents _______

Credit for the first synthesis of an organic compound from an inorganic precursor is usually given to:

Consider the following: Which structures can exist as cis-trans : isomers?

Which of the following species contributes more to the overall hybrid for the species in the box?

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

Which of the following species contributes more to the overall hybrid for the species in the box?

Identify the atomic orbitals in the C-C sigma bond in ethyne.

Representative Carbon Compounds: Functional Groups, Intermolecular Forces, and Infrared Ir Spectroscopy

An Introduction to Organic Reactions: Acids and Bases

Alkanes: Nomenclature, Conformational Analysis, and an Introduction to Synthesis

Stereochemistry: Chiral Molecules

Ionic Reactions - Nucleophilic Substitution and Elimination Reactions of Alkyl Halides

Alkenes and Alkynes I: Properties and Synthesis, Elimination Reactions of Alkyl Halides

Alkenes and Alkynes Ii: Addition Reactions

Nuclear Magnetic Resonance and Mass Spectrometry: Tools for Structure Determination

Radical Reactions

Alcohols and Ethers

Alcohols From Carbonyl Compounds Oxidation-Reduction and Organometallic Compounds

Conjugated Unsaturated Systems

Aromatic Compounds

Reactions of Aromatic Compounds

Aldehydes and Ketones I Nucleophilic Addition to the Carbonyl Group

Aldehydes and Ketones Ii Aldol Reactions

Carboxylic Acids and Their Derivatives Nucleophilic Addition - Elimination at the Acyl Carbon

Synthesis and Reactions of Beta-Dicarbonyl Compounds: More Chemistry of Enolate Ions

Amines

Phenols and Aryl Halides: Nucleophilic Aromatic Substitution

Carbohydrates

Lipids

Amino Acids and Proteins

Nucleic Acids and Protein Synthesis

Filters

Draw all the isomers of C₄H₉Br,using bond-line formulas.

What would be the spatial arrangement (shape)of the atoms of the methyl anion,:CH₃^-?

What is the approximate hybridization state of the oxygen molecule in ethanol,C₂H₅OH?

How many 2p atomic orbitals from boron must be mixed with a 2s atomic orbital to yield the bonding hybrid atomic orbitals in BF₃?