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cleavage and bond formation.
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- (a) When cyclopropane is treated with HI, 1-iodopropaneis formed. A similar type of reaction does not occur withcyclopentane or cyclohexane. Suggest an explanation forcyclopropane’s reactivity. (b) Suggest a method of preparingethylbenzene, starting with benzene and ethylene asthe only organic reagents.(B). Write the chemical reactions of 2-chloro-2-methylbutane with the following two sets of reagents/experimental conditions given below. In each case, denote the type of the chemical reaction: (i). NaOH/H2O/heat: (ii). NaOH/CH3CH2OH/heat:What is Resonance Theory? Sate five conclusions that can be drawn from the theory. State the two main experiments that were used to establish the extra stability of the benzene molecule. What are the factors that confer Aromaticity to an organic molecule? i. State the effects of substituents on a benzene derivative towards further aromatic substitution. Based on the above suggest the various types of substituents that can be attached to Benzene. What are the various ways by which alkenes may be synthesized? i. Give two examples each of Unsymmetrical alkenes and reagents. Give two examples of reactions of alkenes that result in Anti-Markonikov’s addition products
- 12.) If the enthalpy of the reaction was at 298 K, what would be the enthalpy of hydrogenation of ethylene to ethane at 373 K? A.) -1.48 kJ/mol B.) +1.48 kJ/mol C.) -138.42 kJ/mol D.) -135.46 kJ/mol E.) +135.46 kJ/molMake a model of cyclobutane and draw its shape. Comment on its bond angles and how easily the model fitted together. Do you think cyclobutane is a stable or an unstable compound? Give reasons to support your answer including diagrams where appropriate.(B) a What alkane should be used to synthesize the 1- bromo -1- ethyl cyclohexane? Write a chemical reaction and explain b. Write a chemical reaction and name the product formed when 3- pentanol undergoes dehydration c. Comment on kinetic stability or thermodynamic stability of an organic compound
- 2-bromobutane can be prepared in the lab by using organic chemicals and bromine in inert solvent. a) Give the initiation step, the two propagation steps and one possible termination step that are involve in the production of 2-bromopropane with the presence of uv light. b) Predict the name of the mechanism in (a).Interpret the acidity of alcohols on the basis of ground-state polarization and stability of the alcoholate anion(indicate and give symbols for bond polarization)! Compare the relative acidity of ethanol and 2-fluoroethanol!1. Write bond-line formulas for (a.) four aldehydes with the formula of C5H10O (b) three ketones that have the formula C5H10O (c.) four carboxylic acids with the formula C5H10O2 (d.) three esters with the formula C5H10O2
- Write a series of reactions leading to para-bromoethylbenzene, beginning with benzene and using other reagents as needed. What isomeric side products might also be formed?Write a series of reaction leading to parabromoethylbenzene, beginning with benzene and using other reagents as needed. What isomeric side products might also be formed?(a) One test for the presence of an alkene is to add a smallamount of bromine, which is a red-brown liquid, and lookfor the disappearance of the red-brown color. This test doesnot work for detecting the presence of an aromatic hydrocarbon.Explain. (b) Write a series of reactions leading topara-bromoethylbenzene, beginning with benzene andusing other reagents as needed. What isomeric side productsmight also be formed?