Question 1

What is the pKa and general acid strength of formic acid if its conjugate base form has a pKb of 10.23?

Accepted Answer

A)  3.77 - fairly strong weak acid 
B)  5.99 - moderately strong weak acid 
C)  14.00 - not an acid but rather a strong base 
D)  3.23 - fairly strong weak acid 
E)  cannot be determined from the information given 
A)  3.77 - fairly strong weak acid 
B)  5.99 - moderately strong weak acid 
C)  14.00 - not an acid but rather a strong base 
D)  3.23 - fairly strong weak acid 
E)  cannot be determined from the information given

Question 2

Draw an acceptable line-angle formula for the compound shown below.

Accepted Answer

The answer of Draw an acceptable line-angle formula for the...

Question 3

A carbon-hydrogen bond in ethane (CH3CH3) is best described a ________.

Accepted Answer

A)  highly polar 
B)  essentially nonpolar 
C)  ionic 
D)  a multiple bond 
E)  resonance stabilized 
A)  highly polar 
B)  essentially nonpolar 
C)  ionic 
D)  a multiple bond 
E)  resonance stabilized

Question 4

Which of the following choices represent(s) a pair of resonance forms?

Accepted Answer

A)    
B)    
C)    
D)  both A and C 
E)  both B and C 
A)    
B)    
C)    
D)  both A and C 
E)  both B and C

Question 5

Methanesulfonic acid, CH3SO3H, has a pKa of -7 while ethanol, CH3CH2OH, has a pKa of 15.9. Which is the stronger acid and what accounts for this large difference in relative acidity?

Accepted Answer

Methanesulfonic acid is the stronger aci

Question 6

Use the curved arrow formalism to show the movement of electron pairs in the following reaction.

Accepted Answer

The answer of Use the curved arrow formalism to show...

Question 7

According to the following pKa values listed for a set of acids, which would lead to the strongest conjugate base?

Accepted Answer

A)  -2 
B)  1 
C)  7 
D)  25 
E)  50 
A)  -2 
B)  1 
C)  7 
D)  25 
E)  50

What is the pK_a and general acid strength of formic acid if its conjugate base form has a pK_b of 10.23?

Draw an acceptable line-angle formula for the compound shown below.

A carbon-hydrogen bond in ethane (CH₃CH₃) is best described a ________.

Which of the following choices represent(s) a pair of resonance forms?

Methanesulfonic acid, CH₃SO₃H, has a pKa of -7 while ethanol, CH₃CH₂OH, has a pKa of 15.9. Which is the stronger acid and what accounts for this large difference in relative acidity?

Use the curved arrow formalism to show the movement of electron pairs in the following reaction.

According to the following pKa values listed for a set of acids, which would lead to the strongest conjugate base?

Acids and Bases; Functional Groups

Structure and Stereochemistry of Alkanes

The Study of Chemical Reactions

Stereochemistry

Alkyl Halides; Nucleophilic Substitution

Structure and Synthesis of Alkenes; Elimination

Reactions of Alkenes

Structure and Synthesis of Alcohols

Reactions of Alcohols

Infrared Spectroscopy and Mass Spectrometry

Nuclear Magnetic Resonance Spectroscopy

Ethers, Epoxides, and Thioethers

Conjugated Systems, Orbital Symmetry, and Ultraviolet Spectroscopy

Aromatic Compounds

Reactions of Aromatic Compounds

Ketones and Aldehydes

Amines

Carboxylic Acids

Carboxylic Acid Derivatives

Condensations and Alpha Substitutions of Carboxyl Compounds

Carbohydrates and Nucleic Acids

Amino Acids, Peptides, and Proteins

Lipids

Synthetic Polymers

Filters

Exam 1: Structure and Bonding

What is the pKa and general acid strength of formic acid if its conjugate base form has a pKb of 10.23?

Draw an acceptable line-angle formula for the compound shown below.

A carbon-hydrogen bond in ethane (CH3CH3) is best described a ________.

Which of the following choices represent(s) a pair of resonance forms?

Methanesulfonic acid, CH3SO3H, has a pKa of -7 while ethanol, CH3CH2OH, has a pKa of 15.9. Which is the stronger acid and what accounts for this large difference in relative acidity?

Use the curved arrow formalism to show the movement of electron pairs in the following reaction.

According to the following pKa values listed for a set of acids, which would lead to the strongest conjugate base?

Acids and Bases; Functional Groups

Structure and Stereochemistry of Alkanes

The Study of Chemical Reactions

Stereochemistry

Alkyl Halides; Nucleophilic Substitution

Structure and Synthesis of Alkenes; Elimination

Reactions of Alkenes

Structure and Synthesis of Alcohols

Reactions of Alcohols

Infrared Spectroscopy and Mass Spectrometry

Nuclear Magnetic Resonance Spectroscopy

Ethers, Epoxides, and Thioethers

Conjugated Systems, Orbital Symmetry, and Ultraviolet Spectroscopy

Aromatic Compounds

Reactions of Aromatic Compounds

Ketones and Aldehydes

Amines

Carboxylic Acids

Carboxylic Acid Derivatives

Condensations and Alpha Substitutions of Carboxyl Compounds

Carbohydrates and Nucleic Acids

Amino Acids, Peptides, and Proteins

Lipids

Synthetic Polymers

Filters

What is the pK_a and general acid strength of formic acid if its conjugate base form has a pK_b of 10.23?

A carbon-hydrogen bond in ethane (CH₃CH₃) is best described a ________.

Methanesulfonic acid, CH₃SO₃H, has a pKa of -7 while ethanol, CH₃CH₂OH, has a pKa of 15.9. Which is the stronger acid and what accounts for this large difference in relative acidity?