Homework Answers
Quesrtion 29
The alkyl group shown contains 4 carbon atoms. Hence the parent alkane is butane. The linkage of butane is through the second carbon atom which is the secondary carbon atom.
Hence name of the group is sec-butyl
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29) What is the common name of the following alkyl group? T A) tert-Butyl B) sec-Butyl...
Question 1 (1 point) Which of the following statements regarding Newman projections of 1,2- dichloroethane is...
Question 1 (1 point) Which of the following statements regarding Newman projections of 1,2- dichloroethane is false? a) The syn conformation is the highest energy conformation. O b) For the gauche conformations the dihedral angle is 60° Oc) The dihedral angle in the syn conformation is 120°. d) All staggered conformation are lower energy than all eclipsed conformations. e) The anti conformation has a dihedral angle of 180°.
please answer ALL parts of the question Motion: Conformations by Rotations aswer the following questions about...
please answer ALL parts of the question
Motion: Conformations by Rotations aswer the following questions about energy barrier to convert a gauche conformation into its "NTEGRATE THE SKILL -.4 a) Use the energy diagram in Figure 3.3 to answer the following 9 1,2-dichloroethane. i) What is the height of the energy barrier to convert anti-conformation? ii) What is the height of the energy barrier to convert an anti-c f the energy barrier to convert an anti-conformation into its gauche conformation?...
8. What is the IUPAC name for the following compound? A) 2,3-Dimethyl-4-sec-butylheptane B) 4-sec-Butyl-2,3-dimethylheptane C) 3,5,6-Trimethyl-4-propylheptane...
8. What is the IUPAC name for the following compound? A) 2,3-Dimethyl-4-sec-butylheptane B) 4-sec-Butyl-2,3-dimethylheptane C) 3,5,6-Trimethyl-4-propylheptane D) 2,3,5-Trimethyl-4-propylheptane 9. Rank the conformers of butane in order of decreasing stability, putting the most stable first. CH3 Онс сн сн, H CH CH н, сH, н" CH3 Н. H FH H H н H H H н H H IV C) II> III> I> IV D) I>IV> II>II A) IV>I>II> III B) IV>1>1II> II 10. Which of the following chair conformations represents...
Page C 1) What functional group is NOT present in the structure below? a. alkyne b....
Page C 1) What functional group is NOT present in the structure below? a. alkyne b. alkene c. ether d. aldehyde e. amine 2) What is the correct IUPAC name for the molecule below? a. 3-tert-butyl-4-methylhexane b. 3-tert-butyl-4-methylpentane c. neononane d. 3.ethyl-2,2,4-trimethylpentane e. 1-ethyl-1-isopropyl-tert-butane 3) Which molecule will have the highest boiling point? tinio 4) How many different constitutional isomers may be formed upon monochlorination with Cly/light of the alkane shown below? 5) How many secondary hydrogen atoms are present...
Define and provide examples of the following terms: a) n-alkanes b) alkene c) alkyne d) saturated...
Define and provide examples of the following terms: a) n-alkanes b) alkene c) alkyne d) saturated e) hydrophobic f) aromatic g) hydrophilic h) combustion i) methylene group j) methyl group k) common name l) IUPAC name m) conformations n) Newman projection o) eclipsed p) staggered q) gauche conformation r) anti conformation s) catalytic cracking t) cis-trans isomers of a ring u) chair conformation v) boat conformation w) distorted boat x) half chair conformation y) axial position z) equatorial position aa)...
4. What is the IUPAC name for the following compound? A l-Isobutyl-4-isopropyl-2-methylcyclohexane B) 1-sec-Butyl-4-isopropyl-6-methylcyclohexane C) 1-sec-Butyl-4-isopropyl-2-methylcyclohexane...
4. What is the IUPAC name for the following compound? A l-Isobutyl-4-isopropyl-2-methylcyclohexane B) 1-sec-Butyl-4-isopropyl-6-methylcyclohexane C) 1-sec-Butyl-4-isopropyl-2-methylcyclohexane D) 4-Isopropyl-2-methyl-1-sec-butylcyclohexane 5. Which of the following statements about the conformations of acyclic alkanes is not true?
What is the name of this branched alkyl group? C) tert-buty D) isopropyl A) isobuty B)...
What is the name of this branched alkyl group? C) tert-buty D) isopropyl A) isobuty B) iec-butyl HC-CH H6-CH Which sulfide below contains the most methine groups? HS SH D C The spreading of positive and negative charge over bwo or more atoms in a compound is called 10, A) isomerism B) delocalization D) hybridization C) sterooisomerism Which of the following compourids is NOT a oonstitutional isomer of CaHeO? 11. AR 12 Given structures I-IV below, which one represents the...
12) Rank the following alkanes in order of decreasing boiling point, putting the alkane with the...
12) Rank the following alkanes in order of decreasing boiling point, putting the alkane with the highest boiling point first. I A. I>I> I B. I> IlIl> II C. II> Ill> D. II> II> 13) Which of the following is the most stable conformation of cis-1-ethyl-3-isopropylcyclohexane? IV A. I B. II C. II D. IV 14) What term describes the structural relationship between (2R,3R4S)-2,3,4-trichloroheptane and (2S,3S,5R)-2,3,5- trichloroheptane? A) not isomers B) constitutional isomers C) enantiomers D) diastereomers E) conformers
.081) D) II and IV C) I and III B) II and III A) I and...
.081) D) II and IV C) I and III B) II and III A) I and II anti H н н. H H H H 6 Which of the following are gauche conformers of butane? H. H но H
What is the common name for the following structure? A) Isobutane B) Isopentane C) t- Butane...
What is the common name for the following structure? A) Isobutane B) Isopentane C) t- Butane D) n- Butane E) 2-methylbutane Which structure is tert.-butyl bromide? A. Br-CH(CH_3)-CH_2-CH_3 B. Br-C(CH_3)_3 C. Br-CH_2-CH(CH_3)_2 D. Br-C(CH_3)_2-CH_2-CH_3 Which one of the alkanes would you suspect to have the lowest boiling point? A. 2-methylpropane B. pentane C. nonane D. butane How many tertiary hydrogen atoms are there in C1-CH_2-C(CH_3)_2-CH(CH_3)-C(CM_3)_3? A.6 B.3 C.2 D. 1 The conjugate acid of H_2 O is: A. H_2 O:...
Question 1 (1 point) Which of the following statements regarding Newman projections of 1,2- dichloroethane is false? a) The syn conformation is the highest energy conformation. O b) For the gauche conformations the dihedral angle is 60° Oc) The dihedral angle in the syn conformation is 120°. d) All staggered conformation are lower energy than all eclipsed conformations. e) The anti conformation has a dihedral angle of 180°.
please answer ALL parts of the question
Motion: Conformations by Rotations aswer the following questions about energy barrier to convert a gauche conformation into its "NTEGRATE THE SKILL -.4 a) Use the energy diagram in Figure 3.3 to answer the following 9 1,2-dichloroethane. i) What is the height of the energy barrier to convert anti-conformation? ii) What is the height of the energy barrier to convert an anti-c f the energy barrier to convert an anti-conformation into its gauche conformation?...
8. What is the IUPAC name for the following compound? A) 2,3-Dimethyl-4-sec-butylheptane B) 4-sec-Butyl-2,3-dimethylheptane C) 3,5,6-Trimethyl-4-propylheptane D) 2,3,5-Trimethyl-4-propylheptane 9. Rank the conformers of butane in order of decreasing stability, putting the most stable first. CH3 Онс сн сн, H CH CH н, сH, н" CH3 Н. H FH H H н H H H н H H IV C) II> III> I> IV D) I>IV> II>II A) IV>I>II> III B) IV>1>1II> II 10. Which of the following chair conformations represents...
Page C 1) What functional group is NOT present in the structure below? a. alkyne b. alkene c. ether d. aldehyde e. amine 2) What is the correct IUPAC name for the molecule below? a. 3-tert-butyl-4-methylhexane b. 3-tert-butyl-4-methylpentane c. neononane d. 3.ethyl-2,2,4-trimethylpentane e. 1-ethyl-1-isopropyl-tert-butane 3) Which molecule will have the highest boiling point? tinio 4) How many different constitutional isomers may be formed upon monochlorination with Cly/light of the alkane shown below? 5) How many secondary hydrogen atoms are present...
4. What is the IUPAC name for the following compound? A l-Isobutyl-4-isopropyl-2-methylcyclohexane B) 1-sec-Butyl-4-isopropyl-6-methylcyclohexane C) 1-sec-Butyl-4-isopropyl-2-methylcyclohexane D) 4-Isopropyl-2-methyl-1-sec-butylcyclohexane 5. Which of the following statements about the conformations of acyclic alkanes is not true?
What is the name of this branched alkyl group? C) tert-buty D) isopropyl A) isobuty B) iec-butyl HC-CH H6-CH Which sulfide below contains the most methine groups? HS SH D C The spreading of positive and negative charge over bwo or more atoms in a compound is called 10, A) isomerism B) delocalization D) hybridization C) sterooisomerism Which of the following compourids is NOT a oonstitutional isomer of CaHeO? 11. AR 12 Given structures I-IV below, which one represents the...
12) Rank the following alkanes in order of decreasing boiling point, putting the alkane with the highest boiling point first. I A. I>I> I B. I> IlIl> II C. II> Ill> D. II> II> 13) Which of the following is the most stable conformation of cis-1-ethyl-3-isopropylcyclohexane? IV A. I B. II C. II D. IV 14) What term describes the structural relationship between (2R,3R4S)-2,3,4-trichloroheptane and (2S,3S,5R)-2,3,5- trichloroheptane? A) not isomers B) constitutional isomers C) enantiomers D) diastereomers E) conformers
.081) D) II and IV C) I and III B) II and III A) I and II anti H н н. H H H H 6 Which of the following are gauche conformers of butane? H. H но H
What is the common name for the following structure? A) Isobutane B) Isopentane C) t- Butane D) n- Butane E) 2-methylbutane Which structure is tert.-butyl bromide? A. Br-CH(CH_3)-CH_2-CH_3 B. Br-C(CH_3)_3 C. Br-CH_2-CH(CH_3)_2 D. Br-C(CH_3)_2-CH_2-CH_3 Which one of the alkanes would you suspect to have the lowest boiling point? A. 2-methylpropane B. pentane C. nonane D. butane How many tertiary hydrogen atoms are there in C1-CH_2-C(CH_3)_2-CH(CH_3)-C(CM_3)_3? A.6 B.3 C.2 D. 1 The conjugate acid of H_2 O is: A. H_2 O:...
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