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(Solved): 3. Provide reasonable explanations for each of the following observations. Draw structures, mechani ...




3. Provide reasonable explanations for each of the following observations. Draw structures, mechanisms, energy diagrams, etc.
3. Provide reasonable explanations for each of the following observations. Draw structures, mechanisms, energy diagrams, etc. as appropriate (i,e., explain \( = \) good picture \( + \) a few words). a) Solvolysis of \( t \)-butyl bromide in \( 80 \% \) ethanol:water yields \( t \)-butyl alcohol \( \left(\left(\mathrm{CH}_{3}\right)_{3} \mathrm{COH}\right) \) and \( t \)-butyl ethyl ether \( \left(\left(\mathrm{CH}_{3}\right)_{3} \mathrm{COCH}_{2} \mathrm{CH}_{3}\right) \). When the same reaction is carried out in the presence of \( \mathrm{NaCl} \), the reaction rate is unaffected, however, \( t \)-butyl chloride becomes the major product. Explain. b) For 1-bromo-4-t-butylcyclohexane, the cis isomer reacts faster by the \( \mathrm{S}_{\mathrm{N} 1} 1 \) mechanism than the trans isomer. c) The rate of ethanolysis of various alkyl bromides ( \( \mathrm{R}-\mathrm{Br}+\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{OH} \rightarrow \mathrm{ROCH}_{2} \mathrm{CH}_{3}+\mathrm{HBr} \) ) varies as a function of the alkyl group. (Explain the observed trend in the data).


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Answer:- A)This is the solvent effect. Here substitution of Br- takeplace. It is substituted by whatever the nucleophile present in the s
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