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Covalant Bond,Hydrocarbons and Oxygen-Containing Compounds.
Typology: Exercises
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The Covalent Bond
a. sp^2 , 180°. b. sp , 180°. c. sp^2 , 120°. d. sp^3 , 109°.
a. It is divalent. b. It forms bonds that are linear. c. It has two p orbitals. d. It always forms triple bonds to carbon.
a. HCl b. CCl (^4) c. H 2 S d. CO 2
a. sp^3 and sp^2 b. sp^2 and sp^3 c. sp^3 and sp d. sp^2 and sp^2
a. sp^3 and sp^2 b. sp^2 and sp^3 c. sp^3 and sp d. sp^2 and sp^2
a. C^1 : sp ; C^2 : sp b. C^1 : sp^2 ; C^2 : sp^2 c. C^1 : sp ; C^2 : sp^2 d. C^1 : sp^2 ; C^2 : sp
a. 1 b. 2 c. 3 d. 4
a. +4.42 o b. +0.442 o c. +44.2 o d. – 44.2o
a. solubility in ethanol b. direction of rotation of plane-polarized light c. boiling point and melting point d. index of refraction
a. A : E ; B : E b. A : Z ; B : Z c. A : E ; B : Z d. A : Z ; B : E
a. A : E ; B : E b. A : Z ; B : Z c. A : E ; B : Z d. A : Z ; B : E
Molecular Structure and Spectra
a. alcohol b. ether c. carbonyl d. amine
a. alcohol b. ether c. carbonyl d. amine
Intensity (peak): Frequency (cm–1^ ): s 3100 m 2900 m 2800 s 1710 m-w 1600 m-w 1475 m 1465 m 1450 m 1375
a.
b.
c.
d.
Intensity (peak): Frequency (cm–1^ ): m 3100 m 2800 s 1705 m-w 1640 m 1450 m 1375
a.
b.
c.
d.
a. a b. b c. c d. d
(^1) H NMR spectrum:
δ1.30 (triplet, 6H) δ4.29 (quartet, 4H) δ 7.4–7.9 (multiplet, 4H)
Mass Spectrum: m/e: Intensity: (as % of base peak) 222 10% 177 38% 149 100%
IR Spectrum: Intensity (peak): Frequency (cm–1^ ): s 3100 m 2900 m 2800 s 1740 m-w 1600 m-w 1475 m 1465 m 1450 m 1375 s 1300–
a.
b.
c.
d.
a. pentane. b. 2-methylbutane. c. 2,2-dimethylpropane. d. Cannot tell without more information.
a. 1 b. 2 c. 3 d. 4
a.
b.
c.
d.
a. 4 b. 6 c. 7 d. 8
a. 5 b. 7 c. 8 d. 9
a. capture of an H atom b. presence of a 13 C c. presence of a 36 Cl d. capture of a proton
a. 60. b. 60. c. 60. d. 59.
a. chair b. half-chair c. boat d. twist-boat
a.
b.
c.
d.
a. 1,2-dimethylhexane b. 2,4-dimethylcyclohexane c. Dimethylcyclohexane d. 1,3-dimethylcyclohexane
a. decane b. 2,2,3,3-tetramethylbutane c. 2,2,3-trimethylpentane d. 4-methylnonane
a.
b.
c.
d.
a. cyclobutane b. cyclopentane c. cyclohexane d. cycloheptane
a. 4 C 5 H 12 + 2 O 2 → 20 CH 4 + 4 H 2 O b. 2 C 3 H 8 + O 2? → CH 4 + 2 H 2 O c. C 5 H 12 + 8 O 2 → 5 CO 2 + 6 H 2 O d. C 3 H 8 + 5 O 2 → 3 CO 2 + 4 H 2 O
a.
b.
c.
d.
a.
b.
c.
d.
a. Nonradicals are formed from radicals. b. Radicals are formed from other radicals. c. Radicals are formed from nonradicals. d. Nonradicals are formed from other nonradicals.