1 · web viewtest bank for introduction to organic chemistry 6th edition by brown complete...
TRANSCRIPT
Full file at https://testbanku.eu/Chapter 1 - Covalent Bonding and Shapes of Molecules
Test Bank for Introduction to Organic Chemistry 6th Edition by BrownComplete downloadable file at:https://testbanku.eu/Test-Bank-for-Introduction-to-Organic-Chemistry-6th-Edition-by-Brown Package Title: Brown/Poon Test BankCourse Title: Brown/Poon 6eChapter Number: 1
Question type: Multiple Choice
Section 1.1Difficulty Level: Easy1. Which is the electronic configuration that describes Mg2+?
a) 1s2, 2s2
b) 1s2, 2s2, 2p6
c) 1s2, 2s2, 2p6, 3s2
d) 1s2, 2s2, 2p6, 3s2, 3p6
Answer: b
Section 1.1Difficulty Level: Easy2. Which is the electronic configuration that describes a neutral carbon atom?
a) 1s2, 2s2, 2p5
b) 1s2, 2s2, 2p6, 3s2
c) 1s2, 2s2, 2p2
d) 1s2, 2s2, 2p6
Answer: c
Section 1.1Difficulty Level: Easy3. Which atom is described by the electronic configuration 1s22s22p63s23p3?
a) Mgb) Alc) Sid) P
Answer: d
Section 1.1Difficulty Level: Easy4. Which atom is described by the electron configuration 1s22s22p63s23p5?
a) Sb) Sec) Cld) Br
1
Full file at https://testbanku.eu/Chapter 1 - Covalent Bonding and Shapes of Molecules
Answer: c
Section 1.1Difficulty Level: Easy5. A neutral carbon has how many valence electrons?
a) 2b) 4c) 6d) 8
Answer: b
Section 1.1Difficulty Level: Easy6. A neutral oxygen has how many valence electrons?
a) 4b) 5c) 6d) 7
Answer: c
Section 1.1Difficulty Level: Easy7. A neutral nitrogen has how many valence electrons?
a) 4b) 5c) 6d) 7
Answer: b
Section 1.1Difficulty Level: Medium8. Which statement about orbitals is false?
a) Orbitals are regions of space where electrons are found.b) Orbitals may contain up to two electrons each.c) Orbitals are filled in order of decreasing energy.d) Orbitals of equivalent energy are half filled before adding two electrons to any one of them.
Answer: c
2
Full file at https://testbanku.eu/Chapter 1 - Covalent Bonding and Shapes of Molecules
Section 1.2Difficulty Level: Easy
9. Which atom is described by the Lewis structure ?
a) Cb) Pc) Sed) I
Answer: c
Section 1.2Difficulty Level: Easy
10. Which atom is described by the Lewis structure ?
a) Cb) Pc) Sed) I
Answer: a
Section 1.2Difficulty Level: Medium11. Which Lewis structuresare correct? HINT: Perform a total valence count and check formal charges.
a) Ib) IIc) IIId) IV
Answer: a
3
Full file at https://testbanku.eu/Chapter 1 - Covalent Bonding and Shapes of Molecules
Sections 1.2, 1.7Difficulty Level: Medium12. Which Lewis structures are correct? HINT: Perform a total valence count and check formal charges.
a) I, IIb) II, IVc) III, IVd) I, III
Answer: c
Section 1.2Difficulty Level: Medium13. Which functional groups have correct Lewis structures?
a) I, IIb) II, IIIc) I, II, IIId) I, III
Answer: d
4
Full file at https://testbanku.eu/Chapter 1 - Covalent Bonding and Shapes of Molecules
Section 1.2Difficulty Level: Hard14. Which is the correct Lewis structure for acetic acid (CH3CO2H)?
a) Ib) IIc) IIId) IV
Answer: d
Section 1.3Difficulty Level: Medium15. Using the VSEPR model, predict which atoms have bond angles of about 120°.
a) II, IVb) I, IVc) II, IIId) I, III
Answer: d
5
Full file at https://testbanku.eu/Chapter 1 - Covalent Bonding and Shapes of Molecules
Section 1.3Difficulty Level: Medium16. Using the VSEPR model, predict which species have bond angles of about 109°. HINT: Assume that the charges are correct. Add the missing lone pairs before applying the VSEPR theory!
a) I, III, IVb) II, III, Vc) I, IVd) III, IV, V
Answer: a
Section 1.3Difficulty Level: Medium17: Which of the atoms that are marked with an arrow have tetrahedral geometry?
a) I, IIb) II, IVc) I, IV, Vd) II, II, V
Answer: b
6
Full file at https://testbanku.eu/Chapter 1 - Covalent Bonding and Shapes of Molecules
Sections 1.3, 1.5Difficulty Level: Medium18: Which of the atoms that are marked with an arrow are sp2-hybridized?
a) I, II, IIIb) I, II, IVc) I, III, Vd) III, IV
Answer: c
Section 1.3Difficulty Level: Hard
19. According to VSEPR model, what is your prediction for the arrangement of electron pairs for CH3-?
a) linearb) tetrahedralc) bentd) trigonal
Answer: b
Section 1.4Difficulty Level: Easy20. Arrange the bonds in increasing order of ionic character (least first).
C-C Na-O C-N O-H C-O I II III IV V
a) III, I, IV, II, Vb) V, III, I, II, IVc) I, V, III, IV, IId) I, III, V, IV, II
Answer: d
7
Full file at https://testbanku.eu/Chapter 1 - Covalent Bonding and Shapes of Molecules
Section 1.4Difficulty Level: Easy21. Nitrogen has a negative formal charge in which of the following compounds?
a) NaNH2
b) N2
c) NH4Cld) HCN
Answer: a
Section 1.4Difficulty Level: Easy22. What is the formal charge of oxygen in H3O+?
a) –1b) 0c) +1d) +2
Answer: c
Section 1.4Difficulty Level: Medium23. Which compounds contain both covalent and ionic bonds?
CH3OH Na2CO3 NH4Cl NaCl I II III IV
a) I, IIb) II, IVc) I, II, IVd) II, III
Answer: d
Section 1.4Difficulty Level: Medium24. Which of these molecules are polar? HINT: look for the presence of at least one polar covalent bond in these molecules!
a) I,IVb) I, III, IIIc) II, III, IVd) III, IV, V
Answer: b
8
Full file at https://testbanku.eu/Chapter 1 - Covalent Bonding and Shapes of Molecules
Section 1.4Difficulty Level: Medium25. Which of these molecules are polar? HINT: look for the presence of at least one polar covalent bond in these molecules!
a) III, IV, Vb) I, IVc) II, III, Vd) I, III
Answer: c
Section 1.4Difficulty Level: Medium26. What is the formal charge of indicated carbon in the following molecule?
a) –2b) –1c) 0d) +1
Answer: b
9
Full file at https://testbanku.eu/Chapter 1 - Covalent Bonding and Shapes of Molecules
Section 1.4Difficulty Level: Hard27. Using the VSEPR model, predict which molecules have bond angles of about 109°.
a) II, IVb) I, II, IIIc) III, IV, Vd) II, III, IV
Answer: c
Section 1.4Difficulty Level: Hard28. Using the VSEPR model, predict which molecules have bond angles of about 120°.
a) I, II, IVb) I, II, IIIc) III, IV, Vd) II, III, IV
Answer: b
Section 1.5Difficulty Level: Medium29. Which statement about contributing structures is false?
a) All contributing structures must have the same number of valence electrons.b) All contributing structures must obey the rules of covalent bonding.c) The position of nuclei may change.d) Third period atoms may have up to 18electrons around them.
Answer: c
10
Full file at https://testbanku.eu/Chapter 1 - Covalent Bonding and Shapes of Molecules
Section 1.5Difficulty Level: Hard
30. Which of the following are pairs of contributing structures?
a) II, IVb) I, II, IIIc) III, IVd) II, III, ,IV
Answer: c
Section 1.6Difficulty Level: Medium31. The carbon has the correct orbital hybridization in which structures?
a) II, IV, V b) II, III, IVc) I, II, IIId) I, IV, V
Answer: a
11
Full file at https://testbanku.eu/Chapter 1 - Covalent Bonding and Shapes of Molecules
Section 1.6Difficulty Level: Medium32. What are the correct orbital hybridizations for carbon in the following species?
HINT: Add a lone pair if the charge of the molecule suggests it!
a) CH3+ is sp-hybridized
b) CH3- is sp2-hybridized
c) CH4 is sp2-hybridizedd) CH3
- is sp3-hybridized
Answer: d
Section 1.7Difficulty Level: Easy33. Which of the following compounds is a tertiary (3°) alcohol?
I II III IV
a) Ib) IIc) IIId) IV
Answer: b
12
Full file at https://testbanku.eu/Chapter 1 - Covalent Bonding and Shapes of Molecules
Section 1.7Difficulty Level: Medium34. Which compounds are classified correctly? HINT: Assume that the charges are correct. Add the missing lone pairs!
a) III, IV, V b) II, III, IVc) I, III, Vd) I, III, IV
Answer: a
Section 1.7Difficulty Level: Medium35. Which of the three molecules (testosterone, methadone and hydrocodone) contains a ketone?
a) I,IIb) IIIc) II,IIId) I, II, III
Answer: d
13
Full file at https://testbanku.eu/Chapter 1 - Covalent Bonding and Shapes of Molecules
Section 1.7Difficulty Level: Medium36. Which of the three molecules testosterone, methadone and hydrocodone contains an amine?
a) I,IIb) IIIc) II,IIId) I, II, III
Answer: c
Section 1.7Difficulty Level: Medium37. Which of the three molecules testosterone, methadone and hydrocodone contains a hydroxyl group.
a) Ib) I, IIIc) II,IIId) I, II, III
Answer: a
Section 1.7
14
Full file at https://testbanku.eu/Chapter 1 - Covalent Bonding and Shapes of Molecules
Difficulty Level: Medium38. Which of the three molecules aspirin, paracetamol and ibuprofen contains a carboxyl group?
a) Ib) I, IIIc) II,IIId) I, II, III
Answer: b
Section 1.7Difficulty Level: Hard39. What is the correct structure for the aldehyde, which has the formula C4H8O?
a) Ib) IIc) IIId) IV
Answer: c
15
Full file at https://testbanku.eu/Chapter 1 - Covalent Bonding and Shapes of Molecules
Question type: Fill-in-the-Blank
Section 1.1Difficulty Level: Easy40. The spins of two electrons in the same orbital must be _______ .
Answer:paired
Section 1.1Difficulty Level: Easy41. Outer shell electrons are called _________ electrons.
Answer:valence
Section 1.1Difficulty Level: Easy42. ______ is the number of valence electrons for a neutral sulfur atom.
Answer: 6
Section 1.1Difficulty Level: Easy43. ______ is the number of valence electrons for a neutral bromine atom.
Answer: 7
Section 1.1Difficulty Level: Easy44. The tendency of an element to react such that it achieves a noble gas configuration is called the ______ ______. (Sec. 1.1, EASY)
Answer:octet rule
Section 1.4Difficulty Level: Medium45. The most polar bond in the following molecule is __________.
Answer:C-F
16
Full file at https://testbanku.eu/Chapter 1 - Covalent Bonding and Shapes of Molecules
Section 1.4Difficulty Level: Medium46. A __________ bond is characterized by the unequal sharing of electrons.
Answer:polar covalent
Section 1.7Difficulty Level: Medium47. The following molecule contains the _________ and __________ functional groups.
Answer:hydroxyl and carbonyl
Section 1.7Difficulty Level: Medium48. The following molecule contains the _________ and __________ functional groups.
Answer:primary amino and carboxyl
Section 1.7Difficulty Level: Medium49. Functional groups undergo the same type of __________ in whatever compound they are found.
Answer:reactions
Section 1.7Difficulty Level: Medium50. ______________ are the basis for compound nomenclature.
Answer:Functional groups
17
Full file at https://testbanku.eu/Chapter 1 - Covalent Bonding and Shapes of Molecules
Question type: True/False
Section 1.1Difficulty Level: Easy51. Each shell can hold two electrons.
Answer: False
Section 1.1Difficulty Level: Medium52. Orbitals make up the majority of the mass of an atom.
Answer: False
Section 1.2Difficulty Level: Easy53. An neutral atom that has gained electrons is called an anion.
Answer: True
Section 1.2Difficulty Level: Easy54. Ionic bonds are characterized by the unequal sharing of electrons.
Answer: False
Section 1.2Difficulty Level: Medium55. Atoms of the group 7A elements react by losing an electron to achieve a noble gas configuration.
Answer: False
Section 1.2Difficulty Level: Medium56. Atoms of the group 2A elements react by losing two electrons to achieve a noble gas configuration.
Answer: True
Section 1.2Difficulty Level: Medium57. Carbon atoms usually react by gaining 4 electrons to achieve a noble gas configuration.
Answer: False
18
Full file at https://testbanku.eu/Chapter 1 - Covalent Bonding and Shapes of Molecules
Section 1.4Difficulty Level: Medium
58. is a polar molecule.
Answer: True
Section 1.4Difficulty Level: Medium
59. contains only polar covalent bonds.
Answer: False
Section 1.7Difficulty Level: Medium60. The following molecule is an example of a secondary amine.
Answer: False
19