Chem 261 Final Review

98 Questions | By Aaronriobe | Updated: Mar 20, 2022 | Attempts: 649

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1.

What types of orbitals are used to make bond A?
- A.
  
  Sp2-sp3
- B.
  
  Sp3-sp3
- C.
  
  Sp2-sp2
- D.
  
  Sp2-sp
2.

How many sigma bonds are there in the compound above?
- A.
  
  9
- B.
  
  10
- C.
  
  11
- D.
  
  13
3.

Which of the following represents the ground state electron configuration of Nitrogen?
- A.
  
  1s2 2s2 2p5
- B.
  
  1s2 2s2 2p6
- C.
  
  1s2 2s2 2p3
- D.
  
  1s2 2s2 2p4
4.

How many non-bonding electrons are present in compound A? Assume all atoms are neutral.
- A.
  
  10
- B.
  
  12
- C.
  
  7
- D.
  
  6
5.

How many valence electrons does Phosphorous (P) have?
- A.
  
  15
- B.
  
  13
- C.
  
  5
- D.
  
  3
6.

What types of orbitals are used to make bond A in the structure above?
- A.
  
  Sp2-sp2
- B.
  
  Sp3-sp3
- C.
  
  Sp2-sp3
- D.
  
  Sp2-sp
7.

How many sigma bonds are there in the compound above?
- A.
  
  17
- B.
  
  7
- C.
  
  11
- D.
  
  15
8.

How many non-bonding electrons are present in compound A? Assume all atoms are neutral.
- A.
  
  10
- B.
  
  6
- C.
  
  7
- D.
  
  12
9.

Assign values to bond angles A and B in the structure above.
- A.
  
  A = 120°, B = 180°
- B.
  
  A = 109.5°, B = 120°
- C.
  
  A = 120°, B = 120°
- D.
  
  A = 109.5°, B = 109.5°
10.

Determine the orbital hybridization states for atoms A, B, and D.
- A.
  
  A-sp2, B-sp2, D-sp2
- B.
  
  A-sp3, B-sp2, D-sp3
- C.
  
  A-sp, B-sp3, D-sp2
- D.
  
  A-sp2, B-sp2, D-sp3
11.

Which of the following protons (H_A, H_B, and H_D) is most acidic?
- A.
  
  They all have the same acidity.
- B.
  
  HD
- C.
  
  HB
- D.
  
  HA
12.

What are the formal charges on atoms A and B, respectively in the above structure?
- A.
  
  A = +1, B= -1
- B.
  
  A = +1, B= +1
- C.
  
  A = -1, B= 0
- D.
  
  A = 0, B= +1
13.

What are the formal charges on atoms A and B, respectively in the above structure?
- A.
  
  A = 0, B = 0
- B.
  
  A = +1, B = 0
- C.
  
  A = +1, B = +1
- D.
  
  A = -1, B = -1
14.

Rank molecules A, B, and D in order of increasing pKa of the most acidic proton in each.
- A.
  
  A, B, D.
- B.
  
  D, A, B.
- C.
  
  D, B, A.
- D.
  
  B, D, A.
15.

Acidity increases with increasing atom size.
- A.
  
  True
- B.
  
  False
16.

Acidity across the periodic table decreases with electronegativity.
- A.
  
  True
- B.
  
  False
17.

A hydrogen bonded to a SP2 carbon is more acidic than a hydrogen bonded to an SP3 carbon.
- A.
  
  True
- B.
  
  False
18.

Rank the labeled protons in order of increasing pKa.
- A.
  
  D, A, B
- B.
  
  B, A, D
- C.
  
  D, B, A
- D.
  
  A, B, D
19.

Rank the labeled protons in order of increasing pKa.
- A.
  
  D, A, B
- B.
  
  D, B, A
- C.
  
  A, B, D
- D.
  
  B, A, D
20.

What functional groups are present in the molecule?
- A.
  
  An amide and an ester
- B.
  
  A ketone and a nitrile
- C.
  
  An amide and an ether
- D.
  
  An amine and an alcohol
21.

Which of the structures contains an aldehyde functional group?
- A.
  
  A only
- B.
  
  D only
- C.
  
  B and D only
- D.
  
  E only
22.

What functional groups are present in this molecule?
- A.
  
  An aldehyde and a amine
- B.
  
  An amine and an ester
- C.
  
  An amide and an ether
- D.
  
  An ester and an ether
23.

Which of the following represents the IUPAC name for compound A?
- A.
  
  3-chloro-4-propylhexane
- B.
  
  5-chloro-3-ethylheptane
- C.
  
  4-propyl-5-chlorohexane
- D.
  
  3-chloro-4-ethylheptane
24.

Which of the following structures contains a ketone functional group?
- A.
  
  A only
- B.
  
  A, B, and E only
- C.
  
  B and D only
- D.
  
  A and E only
25.

What is the molecular formula for compound A?
- A.
  
  C6 H12 O2
- B.
  
  C6 H12 O
- C.
  
  C5 H10 O2
- D.
  
  C6 H10 O