Download SCH OAC: Major Test 8 BONDING / ORGANIC

SCH 4U: Major Test 8
BONDING / ORGANIC CHEMISTRY
name: ………………………………….……
26. The sharing of electrons in bond formation always involves
A)
B)
C)
D)
lower energy content for the bonded atoms than for the unbonded atoms
formation of positive and negative ions
shared electrons being attracted more by one atom than another
formation of polar molecules
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27. In modern chemical theory an orbital is pictured to be:
A) a spherical or dumbbell-shaped route traced by the electron in its rapid movement
B) an elliptical pathway, outside the nucleus, followed by an electron
C) a region in space having a precise shape, which is completely filled by a dense electron cloud
D) a region in space in which the probability of finding an electron is high
28. How many different values of the second quantum number " ℓ " are possible in the 3rd energy level of any
atom ?  A) 1 B) 2 C) 3 D) 4 E) 5
29. Which of the following species could have the electron configuration  1s22s22p63s23p64s03d8
A) Ni B) Fe C) Cu2+ D) Ni2+
30. In which of the following compounds is sp3 hybridization used to explain the bonding?
A) XeF4 B) H2O
C) BH3
D) PCl5
31. What would be the shape of a molecule containing a central atom attached to four other atoms with one lone
pair of electrons ?
A) tetrahedral B) see-saw C) square planar
D) square pyramidal E) octahedral
32. How many lone pairs (nonbonding pairs) of electrons are on the central atom of an XeF2 molecule
A) zero B) one C) two
D) three E) four
33. Which of the following molecules is planar (flat) ?  A) BF3 B) CF4
C) PF5
D) SF6
34. Which of the following molecules will be polar ?  CO2, H2O, NH3, & BH3
A) CO2, NH3, & BH3 B) H2O & NH3 C) H2O & BH3 D) CO2, H2O & NH3
35. Which statement concerning the molecule to the right is correct?
A) The hybridization of N is sp2
B) There are 8 sigma bonds in this molecule
C) There are 2 π bonds in this molecule
D) The carbon bonded to the O is sp3 hybridized
E) CO2 & BH3
H H O
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|
||
H-N-C -C -H
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H
36. Which of the following characterizes the bonds and geometry of ethene ( C2H4 )
A) 4  bonds, 2 π bonds and a bond angle of 120°
B) 5  bonds, 1 π bond and a bond angle of 109°
C) 5  bonds, 1 π bonds and a bond angle of 120°
D) 6  bonds, 0 π bonds and a bond angle of 90°
37. The compound C3H8 belongs to the same alkyl family as
1) C3H6 2) C4H10 3) C4H8
A) (2) and (4) B) (1) and (3)
C) (1) and (2) D) (4) only
4) C5H12
38. Which one of the following non-cyclic organic compounds is a member of the alkyne family ?
A) C3H6
B) C4H8
C) C7H14
D) C6H10
E) C5H12
39. From this list, select the two molecules that are isomers
(1) H3C–CH2–CH2–CH2–CH3 (2) H3C–CH2–CH2–CH(CH3) 2
(3) H3C–CH2–CH2–CH3
(4) H3C–CH2–CH2–CH(CH3)–CH3
40. Which one of the following is a structural isomer of propanal ?
A) CH3CH2CH2OH
B) CH3COCH3
C) CH3CH2COOH
41. Which one of the following is an isomer of 1-butanol
A) butanoic acid
B) butanal
C) 2-butanone
A) (1) and (2)
C) (1) and (4)
B) (1) and (3)
D) (2) and (4)
D) CH3CH2OCH3
D) diethyl ether
42. Which of the following is a secondary alcohol?
A) CH3-C(CH3)OH-CH3
B) CH3-O-CH3
C) CH3-CHOH-CH3
D) CH3-CH2OH
43. Of the five names listed below, four have deliberate errors. Which one is correctly named ?
A) 2-pentanal B) 2,3-dichloropentane C) 3-methylpropanoic acid D) ethanone E) 2-chloro-3-bromopentane
44. Identify the amino acid:  A) NH2-CHO B) H3C-NH2
C) NH4HCOO
D) H2N-CH2-COOH
45. Which functional groups are present in the following molecule
A) aldehyde & ketone
B) ester & aldehyde
C) ester, ketone & ether
D) aldehyde, ether & ester
O
O
H–C–CH2–O–CH2–C–O–CH2CH3
46. Which of the following compounds could have cis-trans isomers?
i) CH3CH=CH2
ii) CH3CH=CHCl
iii) CHCl=CHBr
A) i) & ii)
B) ii) & iii)
C) i) & iii)
D) ii) only
E) i) , ii) & iii)
47. Benzene( C6H6) is a highly unsaturated hydrocarbon. How many “double” bonds does it contain?
A) 0 B) 1 C) 2 D) 3 E) 6
48. What is the IUPAC name for  CH3–CH2–C(CH3)2–C2H5
A) 2-methyl-2-ethylbutane B) 3-methyl-3-ethylbutane C) 3,3-dimethylpentane D) 2,2-dimethylpentane
49. What is the IUPAC name for the molecule to the right
A) 4-ethyl 4-nonanol
B) 4-ethyl-6-methyl-4-octanol
C) 5-methyl-3-propyl-3-heptanol D) 5-ethyl-3-propyl-3-hexanol
CH2CH2CH3
CH3CH2-C–CH2CH-CH3
OH
50. What is the IUPAC name for the molecule to the right
A) trans-4-nonyne
B) trans-4-nonene
C) cis-5-nonene
D) cis-4-nonene
CH2CH3
Part II: Longer answers. Answer in the space provided
1. Indicate if the following atom is excited or ground state, which element it is and then write the quantum
numbers for the electrons in the last occupied orbital .
3
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 1s22s22p63s23p54d2 ………………………
………………………. ……………………. ………………….
2. Complete the following chart
molecule
AsBr3
SeCl4
IF5
hybrid orbitals used
shape
bond angles
structural sketch ( 3D + LP)& indicate polarity
3. Write the correct IUPAC name for each of the following organic molecules
a)
C3H7
CH2CH(CH3)CH3
C=C
CH3
12
CH3
b)
-OH
Cl
c) CH3 F NO2
CH2–C–CH–COOH
4. Draw the correct structural representation for the following molecules
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1,4-dibromo-2-(2-butyl)-3ethylcyclopentane
** DO
either 4 or 5-NOT BOTH
3,4-diaminophenyl-2,3difluorohexanoate
2,3,4-trinitrocyclobutylisopropylether
( Sketch on a back of paper)
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4. Draw and name 3 structural diagrams for three different alcohols all isomeric with
C6H5-C3H7O.
Each will contain the benzene ring and one should be primary, one secondary and one tertiary.
*Bonus: draw and name another 2° alcohol different from the one above but isomeric with it.
5. Construct a molecular orbital diagram for the NO (g) molecule. Indicate the bond order and
what it means and discuss its expected behavior in a magnetic field.
Bonus: draw a space filling diagram of this molecule