Question 1

What is the approximate H-C-O bond angle in formaldehyde, H2C=O?

Accepted Answer

A)   90 °\degree° 
B)   109 °\degree° 
C)   120 °\degree° 
D)   180 °\degree°E) A) and B)
F) A) and C)

Question 2

Which of the following resonance structures is the least important contributor to the resonance hybrid of the acetate anion, CH3COO-? 3COO-?   A)  1 B)  2 C)  3 D)  4" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   1
B)   2
C)   3
D)   4E) All of the above
F) A) and C)

Question 3

Circle all of the sp2 hybridized atoms in the following molecular structure.

Accepted Answer

Question 4

Which of the following statements is not true about the carbonate anion, CO32-?

Accepted Answer

A)   All of the oxygen atoms bear the same amount of charge
B)   All of the carbon-oxygen bonds are the same length
C)   The carbon atom bears the negative charge
D)   It is basicE) A) and C)
F) A) and B)

Question 5

Draw bond-line structures of all of the secondary (2$\degree$) amines that have the formula C4H9N.

Accepted Answer

Question 6

Which of the following is a primary (1 °\degree° )  amine?

Accepted Answer

A)   1
B)   2
C)   3
D)   4 E) A) and B)
F) A) and C)

Question 7

How many electrons are there in the valence shell of the nitrogen atom of ammonia?

Accepted Answer

A)   4
B)   5
C)   6
D)   8E) B) and C)
F) All of the above

Question 8

What is the approximate C-C-C bond angle in propene, CH3CH=CH2?

Accepted Answer

A)   90 °\degree° 
B)   109 °\degree° 
C)   120 °\degree° 
D)   180 °\degree°E) A) and B)
F) A) and C)

Question 9

Which of the following molecules has a molecular dipole?

Accepted Answer

A)   CO2
B)   BF3
C)   NH3
D)   CH4E) A) and D)
F) B) and C)

Question 10

Circle all of the sp hybridized atoms in the following molecular structure.

Accepted Answer

The answer of Circle all of the sp hybridized atoms...

Question 11

Which of the following statements is not true about the acetate anion, CH3CO2-?

Accepted Answer

A)   The oxygen atoms bear the same amount of charge
B)   The two carbon-oxygen bonds are the same length
C)   The carbon atom bears the negative charge
D)   It is basicE) A) and D)
F) A) and C)

Question 12

What is the approximate C-C-C bond angle in propyne, HCºCCH3?

Accepted Answer

A)   90 °\degree° 
B)   109 °\degree° 
C)   120 °\degree° 
D)   180 °\degree°E) B) and C)
F) C) and D)

Question 13

What is the approximate value of the length of the C=C bond in ethane, CH2=CH2?

Accepted Answer

A)   121 pm
B)   134 pm
C)   142 pm
D)   154 pmE) C) and D)
F) None of the above

Question 14

Which of the following is a polar covalent bond?

Accepted Answer

A)   Na-F
B)   C-H
C)   C-O
D)   Cl-ClE) B) and C)
F) A) and D)

Question 15

Which of the following compounds is an aldehyde?

Accepted Answer

A)   CH3CH2CH2COOH
B)   CH3CH2CHO
C)   CH3CH2CH2OH
D)   CH3CH2COCH3E) A) and B)
F) None of the above

Question 16

What is the approximate strength of the C-C bond of ethane?

Accepted Answer

A)   376 kJ/mol (90 kcal./mol) 
B)   422 kJ/mol (101 kcal./mol) 
C)   556 kJ/mol (133 kcal./mol) 
D)   727 kJ/mol (174 kcal./mol) E) B) and C)
F) A) and D)

Question 17

Which of the following molecules is not linear?

Accepted Answer

A)   H2O
B)   CO2
C)   HCºCH
D)   Cl2E) A) and B)
F) A) and C)

Question 18

Draw bond-line structures of all of the alkanes that have the formula C5H12.

Accepted Answer

Question 19

How many electrons are there in the valence shell of the oxygen atom of water?

Accepted Answer

A)   2
B)   4
C)   6
D)   8E) A) and D)
F) A) and C)

Question 20

Circle and name the functional groups in the following molecule.

Accepted Answer

The answer of Circle and name the functional groups in...

Exam 1: Covalent Bonding and Shapes of Molecules

Circle all of the sp2 hybridized atoms in the following molecular structure.

Correct AnswerverifiedShow Answer

Which of the following is a polar covalent bond?

Correct AnswerverifiedShow Answer

What is the approximate H-C-O bond angle in formaldehyde, H2C=O?

Correct AnswerverifiedShow Answer

Which of the following resonance structures is the least important contributor to the resonance hybrid of the acetate anion, CH3COO-?

Correct AnswerverifiedShow Answer

How many electrons are there in the valence shell of the oxygen atom of water?

Correct AnswerverifiedShow Answer

Which of the following compounds is an aldehyde?

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Circle all of the sp hybridized atoms in the following molecular structure.

Correct AnswerverifiedShow Answer

Draw bond-line structures of all of the secondary (2 °\degree° ) amines that have the formula C4H9N.

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How many electrons are there in the valence shell of the nitrogen atom of ammonia?

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Which of the following molecules is not linear?

Correct AnswerverifiedShow Answer

What is the approximate C-C-C bond angle in propyne, HCºCCH3?

Correct AnswerverifiedShow Answer

Which of the following molecules has a molecular dipole?

Correct AnswerverifiedShow Answer

Which of the following statements is not true about the carbonate anion, CO32-?

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What is the approximate strength of the C-C bond of ethane?

Correct AnswerverifiedShow Answer

Which of the following is a primary (1 °\degree° ) amine?

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Which of the following statements is not true about the acetate anion, CH3CO2-?

Correct AnswerverifiedShow Answer

What is the approximate value of the length of the C=C bond in ethane, CH2=CH2?

Correct AnswerverifiedShow Answer

What is the approximate C-C-C bond angle in propene, CH3CH=CH2?

Correct AnswerverifiedShow Answer

Draw bond-line structures of all of the alkanes that have the formula C5H12.

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Circle and name the functional groups in the following molecule.

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Circle all of the sp² hybridized atoms in the following molecular structure.

Correct Answer
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What is the approximate H-C-O bond angle in formaldehyde, H₂C=O?

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Which of the following resonance structures is the least important contributor to the resonance hybrid of the acetate anion, CH₃COO^-?

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Draw bond-line structures of all of the secondary (2 $\degree$ ) amines that have the formula C₄H₉N.

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What is the approximate C-C-C bond angle in propyne, HCºCCH₃?

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Which of the following statements is not true about the carbonate anion, CO₃^2-?

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Which of the following is a primary (1 $\degree$ ) amine? $Which of the following is a primary (1 \degree ) amine? A) 1 B) 2 C) 3 D) 4$

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Which of the following statements is not true about the acetate anion, CH₃CO₂^-?

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What is the approximate value of the length of the C=C bond in ethane, CH₂=CH₂?

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What is the approximate C-C-C bond angle in propene, CH₃CH=CH₂?

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Draw bond-line structures of all of the alkanes that have the formula C₅H₁₂.

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