Question 1

Draw condensed structures for the four compounds with formula C3H9N.

Accepted Answer

CH₃CH₂CH₂NH₂ C

Question 2

Rank the following compounds in order of increasing acidity: CH3OH, HCl, NH3, and CH4.

Accepted Answer

CH₄ < NH₃ <

Question 3

The formal charge on the oxygens in the compound below are ________.

Accepted Answer

A)  Oxygen 1: 0, Oxygen 2: 0 
B)  Oxygen 1: -1, Oxygen 2: 0 
C)  Oxygen 1: 0, Oxygen 2: -1 
D)  Oxygen 1: +1, Oxygen 2: 0 
E)  Oxygen 1: -1, Oxygen 2: -1 
A)  Oxygen 1: 0, Oxygen 2: 0 
B)  Oxygen 1: -1, Oxygen 2: 0 
C)  Oxygen 1: 0, Oxygen 2: -1 
D)  Oxygen 1: +1, Oxygen 2: 0 
E)  Oxygen 1: -1, Oxygen 2: -1

Question 4

The ________ tells us that each orbital can hold a maximum of 2 electrons.

Accepted Answer

A)  aufbau principle 
B)  Pauli exclusion principle 
C)  Hund's rule principle 
D)  LeChatelier principle 
E)  uncertainty principle 
A)  aufbau principle 
B)  Pauli exclusion principle 
C)  Hund's rule principle 
D)  LeChatelier principle 
E)  uncertainty principle

Question 5

Add the appropriate formal charge to each atom in the molecule below. It is not necessary to indicate formal charges when zero. (All non-bonding electrons are included.)

Accepted Answer

The answer of Add the appropriate formal charge to each...

Question 6

In the compound sodium methoxide (NaOCH3), there is ________ bonding.

Accepted Answer

A)  ionic 
B)  polar covalent 
C)  nonpolar covalent 
D)  a mixture of ionic and covalent 
E)  resonance stabilized 
A)  ionic 
B)  polar covalent 
C)  nonpolar covalent 
D)  a mixture of ionic and covalent 
E)  resonance stabilized

Question 7

Which of the following condensed formulas correctly represents the line-angle structure shown below?

Accepted Answer

A)  CH(CH3)2CH(CH3)CO2H 
B)  C2(CH3)3CO2H 
C)  (CH3)2CC(CH3)CO2H 
D)  C(CH3)2C(CH3)CH2CO2H 
A)  CH(CH3)2CH(CH3)CO2H 
B)  C2(CH3)3CO2H 
C)  (CH3)2CC(CH3)CO2H 
D)  C(CH3)2C(CH3)CH2CO2H

Question 8

Assign the correct formal charge to each nitrogen atom in the following Lewis structure. (All non-bonding electrons are included.)

Accepted Answer

The answer of Assign the correct formal charge to each...

Question 9

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

Accepted Answer

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

Question 10

While you were up late one night studying organic chemistry, you happened to see the last 5 minutes of an infomercial on TV. The spokesperson claimed that their brand of automobile tires were superior to all other brands on the market because they were made by using only natural rubber, isolated from the resin of rubber trees. How could a chemist test her claims that no petroleum products went into the manufacture of her brand of tires?

Accepted Answer

Compounds synthesized from pet

Question 11

Provide the line-angle formula (skeletal structure) for (CH3)2CHCH2CHO.

Accepted Answer

Question 12

Draw the important resonance forms for the structure shown below.

Accepted Answer

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

Question 13

The electronegativity of elements on the periodic table increases going ________ a column and to the ________ in each row.

Accepted Answer

A)  up; right 
B)  up; left 
C)  down; right 
D)  down; left 
A)  up; right 
B)  up; left 
C)  down; right 
D)  down; left

Question 14

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

Accepted Answer

Question 15

In the following acid/base reaction, label the acid, base, conjugate acid and conjugate base.
HO- + (CH3)3NH+ → H2O + (CH3)3N

Accepted Answer

HO^- + (CH₃)₃NH⁺ → H₂O + (

Question 16

Which element in the second row of the periodic table has six valence electrons and a valence of two?

Accepted Answer

The answer of Which element in the second row of...

Question 17

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

Accepted Answer

HCO₂H + ^-NH₂

Question 18

The hydroxide ion (HO-) cannot function well as which of the following?

Accepted Answer

A)  a Bronsted-Lowry base 
B)  a Lewis base 
C)  a nucleophile 
D)  an electron-pair acceptor 
E)  a proton acceptor 
A)  a Bronsted-Lowry base 
B)  a Lewis base 
C)  a nucleophile 
D)  an electron-pair acceptor 
E)  a proton acceptor

Question 19

Which of the following compounds are covalent compounds?

Accepted Answer

A)  KCl 
B)  CF4 
C)  NH3 
D)  both A and B 
E)  both B and C 
A)  KCl 
B)  CF4 
C)  NH3 
D)  both A and B 
E)  both B and C

Question 20

What is the molecular formula for the following line-angle structure?

Accepted Answer

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

Exam 1: Structure and Bonding

Draw condensed structures for the four compounds with formula C3H9N.

Rank the following compounds in order of increasing acidity: CH3OH, HCl, NH3, and CH4.

The formal charge on the oxygens in the compound below are ________.

The ________ tells us that each orbital can hold a maximum of 2 electrons.

Add the appropriate formal charge to each atom in the molecule below. It is not necessary to indicate formal charges when zero. (All non-bonding electrons are included.)

In the compound sodium methoxide (NaOCH3), there is ________ bonding.

Which of the following condensed formulas correctly represents the line-angle structure shown below?

Assign the correct formal charge to each nitrogen atom in the following Lewis structure. (All non-bonding electrons are included.)

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

Provide the line-angle formula (skeletal structure) for (CH3)2CHCH2CHO.

Draw the important resonance forms for the structure shown below.

The electronegativity of elements on the periodic table increases going ________ a column and to the ________ in each row.

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

In the following acid/base reaction, label the acid, base, conjugate acid and conjugate base. HO- + (CH3)3NH+ → H2O + (CH3)3N

Which element in the second row of the periodic table has six valence electrons and a valence of two?

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

The hydroxide ion (HO-) cannot function well as which of the following?

Which of the following compounds are covalent compounds?

What is the molecular formula for the following line-angle structure?

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

Draw condensed structures for the four compounds with formula C₃H₉N.

Rank the following compounds in order of increasing acidity: CH₃OH, HCl, NH₃, and CH₄.

In the compound sodium methoxide (NaOCH₃), there is ________ bonding.

Provide the line-angle formula (skeletal structure) for (CH₃)₂CHCH₂CHO.

The electronegativity of elements on the periodic table increases going a column and to the in each row.

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

In the following acid/base reaction, label the acid, base, conjugate acid and conjugate base. HO^- + (CH₃)₃NH⁺ → H₂O + (CH₃)₃N

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

The hydroxide ion (HO^-) cannot function well as which of the following?