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Cyclopropane is more reactive than most cycloalkanes. What factors lead to cyclopropane being less stable than...
Cycloalkanes - Hydrocarbon compounds arranged in circles. Construct a model of cyclopropane: What is the bond...
Cycloalkanes - Hydrocarbon compounds arranged in circles. Construct a model of cyclopropane: What is the bond angle between the 3 carbon atoms? (Think triangles and look at your model). What does VSPER predict the bond angle to be about a tetrahedral carbon atom? Do you think the electron pairs in cyclopropane are forced, or relaxed? Why or why not, please explain. Is cyclopropane more stable or less stable than propane? Explain. Construct a model of cyclobutane: What is the bond angle between...
Multiple choice question: Why is LiAlH4 more reactive than NaBH4? a. Al is less electronegative than...
Multiple choice question: Why is LiAlH4 more reactive than NaBH4? a. Al is less electronegative than B, meaning there is a greater concentration of negative charge on H when bonded to Al b.H is bonded to both Li and Al in LiAlH4, making it more unstable and therefore more reactive c.The Li+counterion is smaller than Na+, so there is reduced steric bulk in LiAlH4 d.The Al-H bond is longer, and so it is easier to break for a reaction to...
6) The twisted boat conformation of cyclohexane is actually a slightly lower energy conformation than the...
6) The twisted boat conformation of cyclohexane is actually a slightly lower energy conformation than the boat conformation. Which of the following accurately describes one factor involved in this structural behavior? A) lower angle strain in the boat B) higher torsional strain in the twisted boat C) fewer unfavorable steric factors in the twisted boat D) increased rotational freedom in the boat E) lower bond strain in the boat
50 Which of the following explains why epoxides are more reactive than ethers? a. The C-O-C...
50 Which of the following explains why epoxides are more reactive than ethers? a. The C-O-C bond angle of an epoxide is 109°, making epoxides have angle strain. b. The oxygen atom of an epoxide is sp2 hybridized. c. The C-O-C bond angle of an epoxide is 120°, making epoxides have angle strain. d. The C-O-C bond angle of an epoxide is 60°, making epoxides have angle strain. e: None of the above is the correct answer.
i need help understanding this. From what I know more reactive is less stable. Isn't it...
i need help understanding this. From what I know more reactive
is less stable. Isn't it better to have a carbocation next to a EDG
group instead of a EWG. Therefore, if the carbocation ends up next
to a EDG group it will be more stable which is less reactive?
Arrange the following carbocations in the order of increasing reactivity (3 pt): Br CI NH2 NO2 OHC
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...
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...
Problem #8. The strain energy of a cyclic hydrocarbon can be estimated using the experimental enthalpy...
Problem #8. The strain energy of a cyclic hydrocarbon can be estimated using the experimental enthalpy of formation of that compound and the calculated enthalpy of formation for a hypothetical strain-free ring. This would be a ring containing an infinite number of methylene (CH2) groups. Calculated AH for AH per CH2 strain-free (kcal/mol) molecule (kcal/mol) Strain Energy per CH2 (kcal/mol) + 4.2 - 14.7 Strain Energy (kcal/mol) 27.4 26.4 5.8 9.1 + 1.7 - 19.6 - 3.7 - 24.5 Measured...
please answer all parts, thanks! 1. More substituted alkenes are more stable than less substituted alkenes....
please answer all parts, thanks!
1. More substituted alkenes are more stable than less substituted alkenes. Show the orbital overlap that helps to explain this observation. 2. Why is the heat of hydrogenation for an alkene exothermic? Analyze the bonds that are changing. AH = -30 kcal/mol Explain: + H2 3. Treating alkene "A" below with HBr can lead to a number of products. "A" SM + H-Br A bunch of products. For real, hella products. 3.A. Label the stereocenters...
Do you predict that O2 will be more or less stable than O4? What are electronic and...
Do you predict that O2 will be more or less stable than O4? What are electronic and structural differences in these molecules?
6) The twisted boat conformation of cyclohexane is actually a slightly lower energy conformation than the boat conformation. Which of the following accurately describes one factor involved in this structural behavior? A) lower angle strain in the boat B) higher torsional strain in the twisted boat C) fewer unfavorable steric factors in the twisted boat D) increased rotational freedom in the boat E) lower bond strain in the boat
50 Which of the following explains why epoxides are more reactive than ethers? a. The C-O-C bond angle of an epoxide is 109°, making epoxides have angle strain. b. The oxygen atom of an epoxide is sp2 hybridized. c. The C-O-C bond angle of an epoxide is 120°, making epoxides have angle strain. d. The C-O-C bond angle of an epoxide is 60°, making epoxides have angle strain. e: None of the above is the correct answer.
i need help understanding this. From what I know more reactive
is less stable. Isn't it better to have a carbocation next to a EDG
group instead of a EWG. Therefore, if the carbocation ends up next
to a EDG group it will be more stable which is less reactive?
Arrange the following carbocations in the order of increasing reactivity (3 pt): Br CI NH2 NO2 OHC
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...
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...
Problem #8. The strain energy of a cyclic hydrocarbon can be estimated using the experimental enthalpy of formation of that compound and the calculated enthalpy of formation for a hypothetical strain-free ring. This would be a ring containing an infinite number of methylene (CH2) groups. Calculated AH for AH per CH2 strain-free (kcal/mol) molecule (kcal/mol) Strain Energy per CH2 (kcal/mol) + 4.2 - 14.7 Strain Energy (kcal/mol) 27.4 26.4 5.8 9.1 + 1.7 - 19.6 - 3.7 - 24.5 Measured...
please answer all parts, thanks!
1. More substituted alkenes are more stable than less substituted alkenes. Show the orbital overlap that helps to explain this observation. 2. Why is the heat of hydrogenation for an alkene exothermic? Analyze the bonds that are changing. AH = -30 kcal/mol Explain: + H2 3. Treating alkene "A" below with HBr can lead to a number of products. "A" SM + H-Br A bunch of products. For real, hella products. 3.A. Label the stereocenters...
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