Question 1

Identify the resonance structure which results from the following "electron pair movements".

Accepted Answer

A)  
B)    
C)   
D)

Question 2

Which of the following species has(have)  a linear geometry?
I.  CO2\mathrm{CO}_{2}CO2​ 
II.  NO2+\mathrm{NO}_{2}^{+}NO2+​ 
III.  NO2−\mathrm{NO}_{2}^{-}NO2−​

Accepted Answer

A)   only I
B)   only II
C)   I and II
D)   I, II, and III

Question 3

What is the ground state electron configuration of carbon?

Accepted Answer

A)    1 s22 s22px11 \mathrm{~s}^{2} 2 \mathrm{~s}^{2} 2 \mathrm{p}_{\mathrm{x}}{ }^{1}1 s22 s22px​1 
B)    1 s22 s22px1 \mathrm{~s}^{2} 2 \mathrm{~s}^{2} 2 \mathrm{p}_{\mathrm{x}}1 s22 s22px​ 
C)    1 s22 s22px12py11 \mathrm{~s}^{2} 2 \mathrm{~s}^{2} 2 \mathrm{p}_{\mathrm{x}}{ }^{1} 2 \mathrm{p}_{\mathrm{y}}{ }^{1}1 s22 s22px​12py​1 
D)    1 s22 s22px22py1 \mathrm{~s}^{2} 2 \mathrm{~s}^{2} 2 \mathrm{p}_{\mathrm{x}}^{2} 2 \mathrm{p}_{\mathrm{y}}1 s22 s22px2​2py​

Question 4

How many  C3H8O\mathrm{C}_{3} \mathrm{H}_{8} \mathrm{O}C3​H8​O  constitutional isomers are possible?

Accepted Answer

A)   one
B)   two
C)   three
D)   four

Question 5

For which of the following does the equilibrium favor reactants.

Accepted Answer

A)   A
B)   B
C)   C
D)   D

Question 6

Which one of the following mechanistically depicts the protonation of methanol by hydrogen bromide?

Accepted Answer

A)   
B)   
C)   
D)    A

Question 7

The  H−C−H\mathrm{H}-\mathrm{C}-\mathrm{H}H−C−H  bond angles in ethylene,  C2H4\mathrm{C}_{2} \mathrm{H}_{4}C2​H4​ , are closest to

Accepted Answer

A)    90∘90^{\circ}90∘ .
B)    109.5∘109.5^{\circ}109.5∘ .
C)    120∘120^{\circ}120∘ .
D)    180∘180^{\circ}180∘ .  C

Question 8

Which one of the following is the conjugate base of  NH3\mathrm{NH}_{3}NH3​  ?

Accepted Answer

A)    NH4+\mathrm{NH}_{4}{ }^{+}NH4​+ 
B)    H+\mathrm{H}^{+}H+ 
C)    N3−\mathrm{N}^{3-}N3− 
D)    NH2−\mathrm{NH}_{2}^{-}NH2−​

Question 9

In which of the following compounds would you expect  Cl\mathrm{Cl}Cl  to have a partial positive charge?

Accepted Answer

A)    HCl\mathrm{HCl}HCl 
B)    CCl4\mathrm{CCl}_{4}CCl4​ 
C)    NaCl\mathrm{NaCl}NaCl 
D)    HOCl\mathrm{HOCl}HOCl

Question 10

Identify the condensed formula of the following structure:

Accepted Answer

A)    (CH3) 2CHCHClCH(CH3) 2\left(\mathrm{CH}_{3}\right) _{2} \mathrm{CHCHClCH}\left(\mathrm{CH}_{3}\right) _{2}(CH3​) 2​CHCHClCH(CH3​) 2​ 
B)    CH3CH(CH3) CHClCH(CH3) 2\mathrm{CH}_{3} \mathrm{CH}\left(\mathrm{CH}_{3}\right)  \mathrm{CHClCH}\left(\mathrm{CH}_{3}\right) _{2}CH3​CH(CH3​) CHClCH(CH3​) 2​ 
C)    (CH3) 2CHCHClC(CH3) 3\left(\mathrm{CH}_{3}\right) _{2} \mathrm{CHCHClC}\left(\mathrm{CH}_{3}\right) _{3}(CH3​) 2​CHCHClC(CH3​) 3​ 
D)    (CH3) 3CCHClCH(CH3) 3\left(\mathrm{CH}_{3}\right) _{3} \mathrm{CCHClCH}\left(\mathrm{CH}_{3}\right) _{3}(CH3​) 3​CCHClCH(CH3​) 3​

Question 11

In the equilibrium below, the strongest base is:
 (pKaH2O=15.7,pKaNH3=36) \left(\mathrm{pK}_{\mathrm{a}} \mathrm{H}_{2} \mathrm{O}=15.7, \mathrm{pK}_{\mathrm{a}} \mathrm{NH}_{3}=36\right) (pKa​H2​O=15.7,pKa​NH3​=36)  
 H2O+NH2⊖⇌OH⊖+NH3\mathrm{H}_{2} \mathrm{O}+\stackrel{\ominus}{\mathrm{NH}_{2}} \rightleftharpoons \stackrel{\ominus}{\mathrm{OH}}+\mathrm{NH}_{3}H2​O+NH2​⊖​⇌OH⊖+NH3​

Accepted Answer

A)    H2O\mathrm{H}_{2} \mathrm{O}H2​O 
B)    NH2\mathrm{NH}_{2}NH2​ 
C)    OH\mathrm{OH}OH 
D)    NH3\mathrm{NH}_{3}NH3​

Question 12

The formal charges on the nitrogen and oxygen in the following structures are, respectively

Accepted Answer

A)    +1,−1+1,-1+1,−1 
B)    0,−10,-10,−1 
C)    +1,0+1,0+1,0 
D)   0,0

Question 13

Which one of the following is the conjugate acid of ethanol?

Accepted Answer

A)   Option A
B)   Option B
C)   Option C
D)   Option D

Question 14

Which one of the following has the largest acid equilibrium constant,  Ka\mathrm{K}_{\mathrm{a}}Ka​  ?

Accepted Answer

A)   
B)   
C)   
D)     D

Question 15

Give the molecular formula of the compound shown below:

Accepted Answer

A)    C8H16O\mathrm{C}_{8} \mathrm{H}_{16} \mathrm{O}C8​H16​O 
B)    C9H18O\mathrm{C}_{9} \mathrm{H}_{18} \mathrm{O}C9​H18​O 
C)    C10H18O\mathrm{C}_{10} \mathrm{H}_{18} \mathrm{O}C10​H18​O 
D)    C10H20O\mathrm{C}_{10} \mathrm{H}_{20} \mathrm{O}C10​H20​O

Exam 1: Structure Determines Properties

Identify the resonance structure which results from the following "electron pair movements".

Correct Answer
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Which of the following species has(have) a linear geometry? I. $\mathrm{CO}_{2}$ II. $\mathrm{NO}_{2}^{+}$ III. $\mathrm{NO}_{2}^{-}$

Correct Answer
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What is the ground state electron configuration of carbon?

Correct Answer
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How many $\mathrm{C}_{3} \mathrm{H}_{8} \mathrm{O}$ constitutional isomers are possible?

Correct Answer
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For which of the following does the equilibrium favor reactants.

Correct Answer
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Which one of the following mechanistically depicts the protonation of methanol by hydrogen bromide?

Correct Answer
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A

The $\mathrm{H}-\mathrm{C}-\mathrm{H}$ bond angles in ethylene, $\mathrm{C}_{2} \mathrm{H}_{4}$ , are closest to

Correct Answer
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C

Which one of the following is the conjugate base of $\mathrm{NH}_{3}$ ?

Correct Answer
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In which of the following compounds would you expect $\mathrm{Cl}$ to have a partial positive charge?

Correct Answer
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Correct Answer
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In the equilibrium below, the strongest base is: $\left(\mathrm{pK}_{\mathrm{a}} \mathrm{H}_{2} \mathrm{O}=15.7, \mathrm{pK}_{\mathrm{a}} \mathrm{NH}_{3}=36\right)$ $\mathrm{H}_{2} \mathrm{O}+\stackrel{\ominus}{\mathrm{NH}_{2}} \rightleftharpoons \stackrel{\ominus}{\mathrm{OH}}+\mathrm{NH}_{3}$

Correct Answer
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The formal charges on the nitrogen and oxygen in the following structures are, respectively

Correct Answer
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Which one of the following is the conjugate acid of ethanol?

Correct Answer
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Which one of the following has the largest acid equilibrium constant, $\mathrm{K}_{\mathrm{a}}$ ?

Correct Answer
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D

Give the molecular formula of the compound shown below: $Give the molecular formula of the compound shown below: A) \mathrm{C}_{8} \mathrm{H}_{16} \mathrm{O} B) \mathrm{C}_{9} \mathrm{H}_{18} \mathrm{O} C) \mathrm{C}_{10} \mathrm{H}_{18} \mathrm{O} D) \mathrm{C}_{10} \mathrm{H}_{20} \mathrm{O}$

Correct Answer
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Exam 1: Structure Determines Properties

Identify the resonance structure which results from the following "electron pair movements".

Correct AnswerverifiedShow Answer

Which of the following species has(have) a linear geometry? I. CO2\mathrm{CO}_{2}CO2​ II. NO2+\mathrm{NO}_{2}^{+}NO2+​ III. NO2−\mathrm{NO}_{2}^{-}NO2−​

Correct AnswerverifiedShow Answer

What is the ground state electron configuration of carbon?

Correct AnswerverifiedShow Answer

How many C3H8O\mathrm{C}_{3} \mathrm{H}_{8} \mathrm{O}C3​H8​O constitutional isomers are possible?

Correct AnswerverifiedShow Answer

For which of the following does the equilibrium favor reactants.

Correct AnswerverifiedShow Answer

Which one of the following mechanistically depicts the protonation of methanol by hydrogen bromide?

Correct AnswerverifiedA

The H−C−H\mathrm{H}-\mathrm{C}-\mathrm{H}H−C−H bond angles in ethylene, C2H4\mathrm{C}_{2} \mathrm{H}_{4}C2​H4​ , are closest to

Correct AnswerverifiedC

Which one of the following is the conjugate base of NH3\mathrm{NH}_{3}NH3​ ?

Correct AnswerverifiedShow Answer

In which of the following compounds would you expect Cl\mathrm{Cl}Cl to have a partial positive charge?

Correct AnswerverifiedShow Answer

Identify the condensed formula of the following structure:

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The formal charges on the nitrogen and oxygen in the following structures are, respectively

Correct AnswerverifiedShow Answer

Which one of the following is the conjugate acid of ethanol?

Correct AnswerverifiedShow Answer

Which one of the following has the largest acid equilibrium constant, Ka\mathrm{K}_{\mathrm{a}}Ka​ ?

Correct AnswerverifiedD

Give the molecular formula of the compound shown below:

Correct AnswerverifiedShow Answer

Correct Answer
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Which of the following species has(have) a linear geometry? I. $\mathrm{CO}_{2}$ II. $\mathrm{NO}_{2}^{+}$ III. $\mathrm{NO}_{2}^{-}$

Correct Answer
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Correct Answer
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How many $\mathrm{C}_{3} \mathrm{H}_{8} \mathrm{O}$ constitutional isomers are possible?

Correct Answer
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Correct Answer
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Correct Answer
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A

The $\mathrm{H}-\mathrm{C}-\mathrm{H}$ bond angles in ethylene, $\mathrm{C}_{2} \mathrm{H}_{4}$ , are closest to

Correct Answer
verified
C

Which one of the following is the conjugate base of $\mathrm{NH}_{3}$ ?

Correct Answer
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In which of the following compounds would you expect $\mathrm{Cl}$ to have a partial positive charge?

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Which one of the following has the largest acid equilibrium constant, $\mathrm{K}_{\mathrm{a}}$ ?

Correct Answer
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D

Give the molecular formula of the compound shown below: $Give the molecular formula of the compound shown below: A) \mathrm{C}_{8} \mathrm{H}_{16} \mathrm{O} B) \mathrm{C}_{9} \mathrm{H}_{18} \mathrm{O} C) \mathrm{C}_{10} \mathrm{H}_{18} \mathrm{O} D) \mathrm{C}_{10} \mathrm{H}_{20} \mathrm{O}$

Correct Answer
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