Deck 4: An Introduction to Organic Compounds

Question 1

Which of the following statements is (are) true about hydrogen bonding interaction?

A) It occurs only in molecules that contain H bonded to a highly electronegative atom, such as N, O, or F.
B) It is a special type of dipole-dipole interaction.
C) It is present in H₂O.
D) All of these choices.

Answer 1

All of these choices.

Question 2

The correct condensed structure of Propylene glycol, a compound used as a solvent for drugs is

A) CH₃CH₂CH₂OH
B) CH₂HOHCOH₂COH
C)
D)

Answer 2

Question 3

An isotope of fluoromethane, CH₃F, has been used for cerebral blood flow measurement. Which of the following represent the correct line-bond structure of fluoromethane? (C is the central atom.)

A)
B)
C)
D)

Answer 3

Question 4

Dichloromethane, CH₂Cl₂, is widely used as a solvent. Which of the following represents its correct line-bond structure? In this molecule, carbon is the central atom.

A)
B)
C)
D)

Question 5

Which of the following represents the correct line-bond structure of nitrosyl chloride (ONCl)? In this molecule, nitrogen is the central atom.

A)
B)
C)
D)

Question 6

Which of the following is the correct line-bond structure for the BrO₃^- ion?

A)
B)
C)
D)

Question 7

The correct line-bond structure for SO₄^2- ion is

A)
B)
C)
D)

Question 8

The correct line-bond structure for ClI₂⁺ ion is

A)
B)
C)
D)

Question 9

Which of the following contains a nonpolar covalent bond?

A) LiBr
B) CaCl₂
C) H₂O
D) O₂

Question 10

Which of the following molecules is polar?

A) H₂CO (hint: C is the central atom)
B) CH₄
C) N₂
D) BCl₃ (hint: B is the central atom and doesn't have an octet)

Question 11

The molecule CH₄ has a tetrahedral shape. The angle between the bonds in CH₄ is approximately ___.

A) 104.5 $\degree$
B) 109.5 $\degree$
C) 90 $\degree$
D) 120 $\degree$

Question 12

The shape of formaldehyde CH₂O (C is the central atom), a substance often used in building insulation materials, is ___.

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

Question 13

Which molecule is nonpolar even though it contains polar bonds?

A) NH₃
B) H₂O
C) CCF₄
D) CHClF₂

Question 14

Which of the following bonds can be classified as polar?

A) NaCl
B) CH
C) CsBr
D) ClF

Question 15

Which bond is most polar?

A) B-Cl
B) C-Cl
C) O-Cl
D) Cl-Br

Question 16

Oxygen is more electronegative than carbon, so when an oxygen atom pulls the shared pair of bonding electrons toward itself to form a covalent bond, the oxygen atom carries

A) a partial positive charge.
B) no charge.
C) a partial negative charge.
D) both a partial positive charge and a negative charge.

Question 17

In which bond does the oxygen atom possess a partial positive charge?

A) O-H
B) O-F
C) N-O
D) O-C

Question 18

Which atoms in the following molecule would have $\delta$ ^- charge based on the electronegativities of the elements?

A) H and O
B) O and C
C) C and N
D) N and O

Question 19

Which atoms in the following molecule would have $\delta$ ^- charge based on the electronegativities of the elements?

A) H, C, and O
B) N, O, and S
C) C and N
D) N, S, and C

Question 20

Which bond is least polar?

A) H-F
B) H-Cl
C) H-Br
D) H-I

Question 21

Which molecule has a linear geometry?

A) SO₂
B) H₂O
C) OF₂
D) CO₂

Question 22

Which of the following molecules is nonpolar?

A)
B)
C)
D)

Question 23

Which of the following molecules is polar?

A)
B)
C)
D)

Question 24

What is the shape around C atom in OCN^-?

A) linear
B) bent
C) pyramidal
D) Trigonal planar

Question 25

The strongest noncovalent interaction that can occur between hydrocarbons is ___.

A) dipole-dipole forces
B) hydrogen bonding
C) ion-dipole interaction
D) London force

Question 26

The strongest noncovalent interaction that can occur between two methyl alcohol molecules is ___.

A) dipole-dipole forces
B) hydrogen bonding
C) ion-dipole interaction
D) London force

Question 27

Organic compound must contain which of the following atoms?

A) O
B) H
C) S
D) C

Question 28

The following molecule belongs to which family of compounds?

A) alcohols
B) Ethers
C) sulfides
D) Thiols

Question 29

Which pairs of molecules can form a hydrogen bond with one another?

A) NF₃
B) CH₃CH₂CH₂CH₂CH₃
C) CH₃CH₂NH₂
D) CCl₄

Question 30

Serotonin is a molecule involved in the transmission of nerve impulses. One of the organic families present in serotonin is ___.

A) ester
B) alkyne
C) phenol
D) aldehyde

Question 31

The following molecule belongs to which organic family?

A) ketone
B) ether
C) carboxylic acid
D) ester

Question 32

The CaF bond in CaF₂ is nonpolar.

Question 33

Potassium has lower electronegativity than F.

Question 34

CH₂Cl₂ is polar.

Question 35

The Si-Si bond in Cl₃SiSiCl₃ is expected to be polar.

Question 36

Dioxygen difluoride whose actual three dimensional shape is provided below is non-polar.

Question 37

The kinds of interactions that exist between CH₃COOH molecules include dipole-dipole (including hydrogen bonding) interactions and London forces.

Question 38

Hydrocarbons can take part in dipole-dipole interactions.

Question 39

The molecule shown below contains an aldehyde functional group.

Question 40

Ketone is present in Vanillin.

Question 41

The shape of H₂O is bent.

Question 42

Of the two elements, lithium and chromium, ___ has greater electronegativity.

Question 43

The ___ forces are the attraction of neighboring polar groups for one another.

Question 44

The organic family present in this molecule is a (an) ___.

Question 45

Which share the stronger London force interactions, two CH₃CH₂CH₂CH₂CH₂CH₃ molecules or two ?

Question 46

Sketch the line-bond structure of the NO₃^- ion. Specify its molecular geometry.

Question 47

Draw two disulfides with the formula C₄H₁₀S₂.

Question 48

Pseudoephedrine is a nasal decongestant found in several cold remedies. Which organic families are present in this molecule?

Question 49

This molecule is responsible for the aroma of grape fruit. Which organic families are present?

Question 50

Draw two ethers that have the formula C₄H₁₀O.

Question 51

Draw two esters with the formula C₅H₁₀O

Question 52

Draw a molecule with the formula C₇H₈O that has both aldehyde and aromatic groups.

Question 53

Choose the best matching for:

-CO₂

A) Bent
B) pyramidal
C) Trigonal planar
D) Tetrahedral
E) linear

Question 54

Choose the best matching for:

-SO₂

A) Bent
B) pyramidal
C) Trigonal planar
D) Tetrahedral
E) linear

Question 55

Choose the best matching for:

-CH₄

A) Bent
B) pyramidal
C) Trigonal planar
D) Tetrahedral
E) linear

Question 56

Choose the best matching for:

-CH₂O (Carbon is the central atom)

A) Bent
B) pyramidal
C) Trigonal planar
D) Tetrahedral
E) linear

Question 57

Choose the best matching for:

-NH₃

A) Bent
B) pyramidal
C) Trigonal planar
D) Tetrahedral
E) linear

Question 58

Choose the best matching for:

-

A) disulfide
B) thiol
C) aldehyde
D) sulfide
E) amine
F) ether
G) alkene
H) Amide
I) Carboxylic acid
J) ketone
K) ester
L) Alkyl halide
M) alcohol

Question 59

Choose the best matching for:

-

A) disulfide
B) thiol
C) aldehyde
D) sulfide
E) amine
F) ether
G) alkene
H) Amide
I) Carboxylic acid
J) ketone
K) ester
L) Alkyl halide
M) alcohol

Question 60

Choose the best matching for:

-

A) disulfide
B) thiol
C) aldehyde
D) sulfide
E) amine
F) ether
G) alkene
H) Amide
I) Carboxylic acid
J) ketone
K) ester
L) Alkyl halide
M) alcohol

Question 61

Choose the best matching for:

-

A) disulfide
B) thiol
C) aldehyde
D) sulfide
E) amine
F) ether
G) alkene
H) Amide
I) Carboxylic acid
J) ketone
K) ester
L) Alkyl halide
M) alcohol

Question 62

Choose the best matching for:

-

A) disulfide
B) thiol
C) aldehyde
D) sulfide
E) amine
F) ether
G) alkene
H) Amide
I) Carboxylic acid
J) ketone
K) ester
L) Alkyl halide
M) alcohol

Question 63

Choose the best matching for:

-

A) disulfide
B) thiol
C) aldehyde
D) sulfide
E) amine
F) ether
G) alkene
H) Amide
I) Carboxylic acid
J) ketone
K) ester
L) Alkyl halide
M) alcohol

Question 64

Choose the best matching for:

-

A) disulfide
B) thiol
C) aldehyde
D) sulfide
E) amine
F) ether
G) alkene
H) Amide
I) Carboxylic acid
J) ketone
K) ester
L) Alkyl halide
M) alcohol

Question 65

Choose the best matching for:

-

A) disulfide
B) thiol
C) aldehyde
D) sulfide
E) amine
F) ether
G) alkene
H) Amide
I) Carboxylic acid
J) ketone
K) ester
L) Alkyl halide
M) alcohol

Question 66

Choose the best matching for:

-

A) disulfide
B) thiol
C) aldehyde
D) sulfide
E) amine
F) ether
G) alkene
H) Amide
I) Carboxylic acid
J) ketone
K) ester
L) Alkyl halide
M) alcohol

Question 67

Choose the best matching for:

-

A) disulfide
B) thiol
C) aldehyde
D) sulfide
E) amine
F) ether
G) alkene
H) Amide
I) Carboxylic acid
J) ketone
K) ester
L) Alkyl halide
M) alcohol

Question 68

Choose the best matching for:

-

A) disulfide
B) thiol
C) aldehyde
D) sulfide
E) amine
F) ether
G) alkene
H) Amide
I) Carboxylic acid
J) ketone
K) ester
L) Alkyl halide
M) alcohol

Question 69

Choose the best matching for:

-

A) disulfide
B) thiol
C) aldehyde
D) sulfide
E) amine
F) ether
G) alkene
H) Amide
I) Carboxylic acid
J) ketone
K) ester
L) Alkyl halide
M) alcohol

Question 70

Choose the best matching for:

-

A) disulfide
B) thiol
C) aldehyde
D) sulfide
E) amine
F) ether
G) alkene
H) Amide
I) Carboxylic acid
J) ketone
K) ester
L) Alkyl halide
M) alcohol

Question 71

Sketch the line-bond structure for each molecule or polyatomic ion of the following. Determine the molecular geometry and molecular polarity. (Indicate its shape and whether it is polar or nonpolar).
-H₂S

A) Lewis Structure
B) Shape
C) Polar or nonpolar?

Question 72

Sketch the line-bond structure for each molecule or polyatomic ion of the following. Determine the molecular geometry and molecular polarity. (Indicate its shape and whether it is polar or nonpolar).
-AsCl₃

A) Lewis Structure
B) Shape
C) Polar or nonpolar?

Question 73

Sketch the line-bond structure for each molecule or polyatomic ion of the following. Determine the molecular geometry and molecular polarity. (Indicate its shape and whether it is polar or nonpolar).
-CSe₂

A) Lewis Structure
B) Shape
C) Polar or nonpolar?

Question 74

Sketch the line-bond structure for each molecule or polyatomic ion of the following. Determine the molecular geometry and molecular polarity. (Indicate its shape and whether it is polar or nonpolar).
-PO₄^3-

A) Lewis Structure
B) Shape
C) Polar or nonpolar?

Question 75

Sketch the line-bond structure for each molecule or polyatomic ion of the following. Determine the molecular geometry and molecular polarity. (Indicate its shape and whether it is polar or nonpolar).
-NO₂^-

A) Lewis Structure
B) Shape
C) Polar or nonpolar?