please answer question 7.38 a-d.

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innti as fectrochars fesctome of carbonys and Aelated Functional Groups then transforms into an acetal. a) Draw the mechanism for the conversion of the ketone into the hemiacetal. b) The first step in converting the hemiacetal into the acetal involves formation of the following oxonium ion. Draw the mechanism to show how this ion is made from the hemiacetal. c) Propose a mechanism for how the oxonium structure in part (b) is converted into the final acetal product. d) Use the mechanistic steps from parts (a), (b), and (c) to propose a mechanism by which the following acetal is formed from cyclohexanone. 7.39 a) Draw an energy diagram representing the m