A Diels–Alder reaction calls for the use of 5.8 mL5.8 mL of a 4.0 M solution of cyclopentadiene in methanol. Calculate the number of moles of cyclopentadiene present in this volume.
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A Diels–Alder reaction calls for the use of 5.8 mL5.8 mL of a 4.0 M solution of cyclopentadiene in methanol. Calculate the number of moles of cyclopentadiene present in this volume.
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- Born-Haber cycle; I don’t know how to formulate it for this reaction.Write the propagation steps leading to the formation of dichloromethane (CH2Cl2) from chloromethane21.) Calculate the enthalpy of hydrogenation of benzene to cyclohexane from the following reactions A,H (kJ/mol) C6H6 (1) + 15/2 02 (g) → 6 CO2 (g) + 3 H20 (1) C6H12 (1) + 9 02 (g) → 6 CO2 (g) + 6 H20 (1) H2 (g) + ½ 02 (g) → H2O (1) -3268 -3920 -285.83 a.) -205 kJ/mol b.) -1507 kJ/mol c.) -938 kJ/mol d.) -366 kJ/mol
- A Diels-Alder reaction calls for the use of 5.2 mL of a 4.0 M solution of cyclopentadiene in methanol. Calculate the number of moles of cyclopentadiene present in this volume. number of moles of cyclopentadiene: mol * TOOLS x10Comment on the difference between the enthalpy of combustion values of anthracene, napthalene, and phenathrene. delta H anthracene = -7063.8±5.3 kJ/mol delta H napthalene = -5160. ± 20. kJ/mol delta H phenanthrene is -7040. ± 30. kJ/molFree‑radical halogenation can occur with chlorine and a source of direct UV radiation or sunlight. Chlorination of 2,4‑dimethylpentane via radical halogenation leads to the formation of all three of the products shown. Estimate the relative percentages of each product that will be formed using this means of halogenation. Presume that 1 equivalent of chlorine is used.
- Use the following atomic weights and quantities to calculate the overall % yield of tetraphenylcyclopentadienone. Remember that your yield must be based on the limiting reagent, and that grams must be converted to moles. Filling out most of the chart will help. Give only two significant digits in your answer. If after rounding the answer is a whole number, do not include a decimal point. C = 12, H = 1, K = 39, O = 16 benzil + dibenzyl ketone potassium + → tetraphenylcyclopentadienone hydroxide formula formula weight grams 2.314 7.231 3.857 3.173 moles Answer: % yieldWhy is benzene less reactive than hexane in terms of stability of free radicals?Use the following atomic weights and quantities to calculate the overall % yield of tetraphenylcyclopentadienone. Remember that your yield must be based on the limiting reagent, and that grams must be converted to moles. Filling out most of the chart will help. Give only two significant digits in your answer. If after rounding the answer is a whole number, do not include a decimal point. C = 12, H = 1, K = 39, O = 16 formula formula weight grams moles Answer: benzil + dibenzyl ketone + potassium hydroxide tetraphenylcyclopentadienone 4.135 8.646 1.140 % yield 6.956
- write both the thermodynamic & kinetic products for the reaction of: 1,3-pentadiene with HBrThe compound below is treated with chlorine in the presence of light. H₂C CH3 H3C CH₂CH3 Draw the structure for the organic radical species produced by reaction of the compound with a chlorine atom. Assume reaction occurs at the weakest C-H bond. • You do not have to consider stereochemistry. • You do not have to explicitly draw H atoms.True or False: Acetylene is a naturally occurring conjugated diene True or False: The Diels-Alder reaction has the stereochemistry of the dienophile is retained in the product. True or False: When looking at kinetic vs. thermodynamic products the kinetic product predominates at low temperature. True or False: the mechanism of the Diels-Alder reaction is three π bonds break; one σ bond and two π bonds form.