Question 1

Draw a correct Lewis structure for boric acid, B(OH)3.

Accepted Answer

or

Question 2

For most compounds in which a nitrogen atom bears no formal charge, the valence of this nitrogen atom is ________.

Accepted Answer

3

Question 3

Write a completed equation for the acid-base pair shown below.
HCN + NaOH →

Accepted Answer

HCN + NaOH → NaCN + H₂O

Question 4

Provide the line-angle formula (skeletal structure) for CH2=CHCH2CH2C(CH3)3.

Accepted Answer

Question 5

Draw the line energy orbital diagram for the outer shell of an uncharge nitrogen atom and describe the location and number of unshared electrons.

Accepted Answer

@#IMG-DLM& There are three unshared elec

Question 6

Write a completed equation for the acid-base pair shown below.
HCO2H + -NH2 →

Accepted Answer

HCO₂H + ^-NH₂

Question 7

Draw a correct Lewis structure for (CH3)2CHCOOH.

Accepted Answer

Question 8

Nitroamines are common functional groups found in energetic materials, such as RDX and HMX. For the structure below, draw two other significant resonance structures, include any formal charges, and indicate the hybridization on each nitrogen and oxygen.

Accepted Answer

All nitrog

Question 9

Provide the products of the following acid-base reaction.
(CH3)3NH+ + HO-→

Accepted Answer

Question 10

Which sequence correctly ranks the following protons in order of increasing pKa value?

Accepted Answer

A)  3<1<2 
B)  2<1<3 
C)  3<2<1 
D)  1<3<2 
A)  3<1<2 
B)  2<1<3 
C)  3<2<1 
D)  1<3<2

Question 11

Draw the important resonance forms for the structure shown below.

Accepted Answer

The answer of Draw the important resonance forms for the...

Question 12

The compound phenol is shown below. Provide the structure of the conjugate base of phenol.

Accepted Answer

The answer of The compound phenol is shown below. Provide...

Question 13

Draw a correct Lewis structure for acetaldehyde, CH3CHO.

Accepted Answer

Question 14

Provide the line-angle formula (skeletal structure) for (CH3CH2)2C=O.

Accepted Answer

Question 15

Which of the following molecules contains a polar covalent bond?

Accepted Answer

A)  H2 
B)  F2 
C)  CH3Cl 
D)  NaCl 
E)  He 
A)  H2 
B)  F2 
C)  CH3Cl 
D)  NaCl 
E)  He

Question 16

What is the molecular formula for the molecule shown?

Accepted Answer

The answer of What is the molecular formula for the...

Question 17

Draw a correct Lewis structure for acetonitrile, CH3CN.

Accepted Answer

Question 18

Provide the line-angle formula for CH3CH2C(CH3)2CH2CHO

Accepted Answer

Question 19

The pH of a 150 mL aqueous solution of 2.13 x 10-3 M HCl is ________.

Accepted Answer

A)  -3.000 
B)  3.000 
C)  2.672 
D)  2.130 
E)  none of the above 
A)  -3.000 
B)  3.000 
C)  2.672 
D)  2.130 
E)  none of the above

Question 20

Which is more acidic, HF or HI? Explain.

Accepted Answer

HI is more acidic. As a conjug

Exam 1: Introduction and Review

Draw a correct Lewis structure for boric acid, B(OH)3.

For most compounds in which a nitrogen atom bears no formal charge, the valence of this nitrogen atom is ________.

Write a completed equation for the acid-base pair shown below. HCN + NaOH →

Provide the line-angle formula (skeletal structure) for CH2=CHCH2CH2C(CH3)3.

Draw the line energy orbital diagram for the outer shell of an uncharge nitrogen atom and describe the location and number of unshared electrons.

Write a completed equation for the acid-base pair shown below. HCO2H + -NH2 →

Draw a correct Lewis structure for (CH3)2CHCOOH.

Nitroamines are common functional groups found in energetic materials, such as RDX and HMX. For the structure below, draw two other significant resonance structures, include any formal charges, and indicate the hybridization on each nitrogen and oxygen.

Provide the products of the following acid-base reaction. (CH3)3NH+ + HO-→

Which sequence correctly ranks the following protons in order of increasing pKa value?

Draw the important resonance forms for the structure shown below.

The compound phenol is shown below. Provide the structure of the conjugate base of phenol.

Draw a correct Lewis structure for acetaldehyde, CH3CHO.

Provide the line-angle formula (skeletal structure) for (CH3CH2)2C=O.

Which of the following molecules contains a polar covalent bond?

What is the molecular formula for the molecule shown?

Draw a correct Lewis structure for acetonitrile, CH3CN.

Provide the line-angle formula for CH3CH2C(CH3)2CH2CHO

The pH of a 150 mL aqueous solution of 2.13 x 10-3 M HCl is ________.

Which is more acidic, HF or HI? Explain.

Structure and Properties of Organic Molecules

Structure and Stereochemistry of Alkanes

The Study of Chemical Reactions

Stereochemistry

Alkyl Halides: Nucleophilic Substitution and Elimination

Structure and Synthesis of Alkenes

Reactions of Alkenes

Alkynes

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

Draw a correct Lewis structure for boric acid, B(OH)₃.

Provide the line-angle formula (skeletal structure) for CH₂=CHCH₂CH₂C(CH₃)₃.

Write a completed equation for the acid-base pair shown below. HCO₂H + ^-NH₂ →

Draw a correct Lewis structure for (CH₃)₂CHCOOH.

Provide the products of the following acid-base reaction. (CH₃)₃NH⁺ + HO^-→

Which sequence correctly ranks the following protons in order of increasing pK_a value?

Draw a correct Lewis structure for acetaldehyde, CH₃CHO.

Provide the line-angle formula (skeletal structure) for (CH₃CH₂)₂C=O.

Draw a correct Lewis structure for acetonitrile, CH₃CN.

Provide the line-angle formula for CH₃CH₂C(CH₃)₂CH₂CHO

The pH of a 150 mL aqueous solution of 2.13 x 10^-3 M HCl is ________.