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Page C 1) What functional group is NOT present in the structure below? a. alkyne b....
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1)...
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) If an acyclic alkane hydrocarbon contains n carbon atoms, how many hydrogen atoms must it also 1) contain? A) 2n +2 C) n -2 D) n+2 E) 2n 2) Identify the number of tertiary carbons in the following structure 2) A) 3 C) 5 D) 6 E) 2 3) Give the IUPAC name for the following structure 3) A) 2-methyl-3-ethylheptane B) 2-methyl-3-propylheptane C) 3-ethyl-2-methylheptane...
Specify the types of strain that destabilize the conformer shown below. Hint: All bonds not explicitly...
Specify the types of strain that destabilize the conformer shown below. Hint: All bonds not explicitly shown are in the staggered conformation. 1. Torsional strain 2. Angle (ring) strain 3. Steric (van der Waals) strain CH3 H H H. H CH3 Calculate strain energy for the conformer pictured below, using strain energy increments from the table. Strain Energy for Alkanes Interaction / Compound kJ/mol kcal/mol 4.0 1.0 H: H eclipsing H: CH3 eclipsing CH3 : CH3 eclipsing 5.8 1.4 11.0...
29) What is the common name of the following alkyl group? T A) tert-Butyl B) sec-Butyl...
29) What is the common name of the following alkyl group? T A) tert-Butyl B) sec-Butyl C) Isopropyl D) Isobutyl 30) Rank the following alkanes in order of decreasing boiling point, putting the alkane with the highest boiling point first. A) II > III >I C D B) I > III >II ) IIT >II> I ) I>II> III 31) - 31) Which of the following statements about the conformations of acyclic alkanes is true? A) A staggered conformation with...
6. Build the cyclobutane ring and study the angle strain and torsional strain. Draw the structures to explain thes...
6. Build the cyclobutane ring and study the angle strain and torsional strain. Draw the structures to explain these factors. 7. The conformation of cyclobutane is slightly folded. Folding gives partial relief from the eclipsing of bonds, as shown in the Newman projection. Compare this actual structure with the hypothetical planar structure. Draw the relevant structures. 8. trans-1,2-Dimethylcyclobutane is more stable than cis-1,2-dimethylcyclobutane, but cis-1,3- dimethylcyclobutane is more stable than trans-1,3-dimethylcyclobutane. Use the molecular models to find the reasons for...
Make3 a model of cyclopentane. Does this molecule seem to have any ring strain in the...
Make3 a model of cyclopentane. Does this molecule seem to have any ring strain in the sense that the three and four-membred rings do? The molecule is not completely strin-free because there is some eclipsing. Identify the eclipsed atoms or groups when the molecule is planar. In fact the molecule is not planar, but is puckered in either of two ways; (i) One C-atom is abover or below the plane defined by the other four coplanar C-atoms defining an envelope...
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)...
1. How many constitutional Date: utional isomers are possible for the formula CH? 2. The IUPAC...
1. How many constitutional Date: utional isomers are possible for the formula CH? 2. The IUPAC name for A) 6-Ethyl-3,4-dimethylheptane B) 2-Ethyl-4,5-dimethylheptane (C) 3,4,6-Trimethyloctane D) 3,5,6-Trimethyloctane E) 2-(1-Methylpropyl)-4-methylhexane 3. Isopentyl is the common name for which alkyl group? CH3CH,CH,CH- A) CH3 B) CH3CH2CHCH2- CH CH,CHCH,CH- CH; CH3CH2CH- CH.CH CH CH3CCH,— D) E) CH Write structural formula for each of the following (b) 2,2-Dimethyl-3-ethylheptane (a) Neopentyl bromide (c) 4-Methyl-2-penten-2-ol (e) 1,4-Dicyclopropylcyclohexane (d) trans-4-7-Butylcyclohexanol (1) Bicylo[3,1,1 Jheptane Give IUPAC Name for each...
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:...
6. Provide the IUPAC names for the compounds below Name: 7. Draw the following: cis-1-isobutyl-2-propyleyclopentane 8....
6. Provide the IUPAC names for the compounds below Name: 7. Draw the following: cis-1-isobutyl-2-propyleyclopentane 8. Label the indicated atoms in the structure below as 1º, 2º, 3º, or 4º. PB A A B co 9. Draw Newman projections for the day-diethylane about the C4CS bond, Circle the most stable conforme if you need additional space, please feel free to the backside of this paper 10. Draw the chair conformation and ring-flip for the given compound. Calculate the sterie strain...
1. Match each structure to the functional group a alcohol b. aldehyde c. ketone d. acid...
1. Match each structure to the functional group a alcohol b. aldehyde c. ketone d. acid e. esterf. amine HC CH, OH ii. iii. ОН iv. OH H vi. NH2 vii. 2. For each of the following, write the formula (abbreviated) a. OH b. ОН c. 2. What is stereospecificity? Why is it important? 3. For each molecule below, identify the functional groups. НО а. Сн,он СН,ОН ОНИ ОН b. ОН ОН Н.N. О НО. о с.. ОД d. но...
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) If an acyclic alkane hydrocarbon contains n carbon atoms, how many hydrogen atoms must it also 1) contain? A) 2n +2 C) n -2 D) n+2 E) 2n 2) Identify the number of tertiary carbons in the following structure 2) A) 3 C) 5 D) 6 E) 2 3) Give the IUPAC name for the following structure 3) A) 2-methyl-3-ethylheptane B) 2-methyl-3-propylheptane C) 3-ethyl-2-methylheptane...
Specify the types of strain that destabilize the conformer shown below. Hint: All bonds not explicitly shown are in the staggered conformation. 1. Torsional strain 2. Angle (ring) strain 3. Steric (van der Waals) strain CH3 H H H. H CH3 Calculate strain energy for the conformer pictured below, using strain energy increments from the table. Strain Energy for Alkanes Interaction / Compound kJ/mol kcal/mol 4.0 1.0 H: H eclipsing H: CH3 eclipsing CH3 : CH3 eclipsing 5.8 1.4 11.0...
29) What is the common name of the following alkyl group? T A) tert-Butyl B) sec-Butyl C) Isopropyl D) Isobutyl 30) Rank the following alkanes in order of decreasing boiling point, putting the alkane with the highest boiling point first. A) II > III >I C D B) I > III >II ) IIT >II> I ) I>II> III 31) - 31) Which of the following statements about the conformations of acyclic alkanes is true? A) A staggered conformation with...
6. Build the cyclobutane ring and study the angle strain and torsional strain. Draw the structures to explain these factors. 7. The conformation of cyclobutane is slightly folded. Folding gives partial relief from the eclipsing of bonds, as shown in the Newman projection. Compare this actual structure with the hypothetical planar structure. Draw the relevant structures. 8. trans-1,2-Dimethylcyclobutane is more stable than cis-1,2-dimethylcyclobutane, but cis-1,3- dimethylcyclobutane is more stable than trans-1,3-dimethylcyclobutane. Use the molecular models to find the reasons for...
Make3 a model of cyclopentane. Does this molecule seem to have any ring strain in the sense that the three and four-membred rings do? The molecule is not completely strin-free because there is some eclipsing. Identify the eclipsed atoms or groups when the molecule is planar. In fact the molecule is not planar, but is puckered in either of two ways; (i) One C-atom is abover or below the plane defined by the other four coplanar C-atoms defining an envelope...
1. How many constitutional Date: utional isomers are possible for the formula CH? 2. The IUPAC name for A) 6-Ethyl-3,4-dimethylheptane B) 2-Ethyl-4,5-dimethylheptane (C) 3,4,6-Trimethyloctane D) 3,5,6-Trimethyloctane E) 2-(1-Methylpropyl)-4-methylhexane 3. Isopentyl is the common name for which alkyl group? CH3CH,CH,CH- A) CH3 B) CH3CH2CHCH2- CH CH,CHCH,CH- CH; CH3CH2CH- CH.CH CH CH3CCH,— D) E) CH Write structural formula for each of the following (b) 2,2-Dimethyl-3-ethylheptane (a) Neopentyl bromide (c) 4-Methyl-2-penten-2-ol (e) 1,4-Dicyclopropylcyclohexane (d) trans-4-7-Butylcyclohexanol (1) Bicylo[3,1,1 Jheptane Give IUPAC Name for each...
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:...
6. Provide the IUPAC names for the compounds below Name: 7. Draw the following: cis-1-isobutyl-2-propyleyclopentane 8. Label the indicated atoms in the structure below as 1º, 2º, 3º, or 4º. PB A A B co 9. Draw Newman projections for the day-diethylane about the C4CS bond, Circle the most stable conforme if you need additional space, please feel free to the backside of this paper 10. Draw the chair conformation and ring-flip for the given compound. Calculate the sterie strain...
1. Match each structure to the functional group a alcohol b. aldehyde c. ketone d. acid e. esterf. amine HC CH, OH ii. iii. ОН iv. OH H vi. NH2 vii. 2. For each of the following, write the formula (abbreviated) a. OH b. ОН c. 2. What is stereospecificity? Why is it important? 3. For each molecule below, identify the functional groups. НО а. Сн,он СН,ОН ОНИ ОН b. ОН ОН Н.N. О НО. о с.. ОД d. но...
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