9. What type of reaction takes place upon treatment of a ketoee with HCN t form
ID: 713444 • Letter: 9
Question
9. What type of reaction takes place upon treatment of a ketoee with HCN t form a cyanohydrin? b.electrophilic addition c) nucleophilic substitution d) electrophilic substitution 10, which hydrogens are the most acidic in the compound below? a) CH, hydrogens b) CH hydrogens c) all H's are equally acidic Il. Which of the following compounds would give a H NMR spectrum consiting of two singlets and a "C NMR consisting of consisting of three signals? a. only iDonly ili e) only i and il d) only ill and fv _12. Which signal is further downfieldkan 'H NMR: a peak at 2.0 ppm or a peak at 4.0 ppm? the peak at 4.0 ppm a) the peak at 2.0 ppm 13. Which CHio compound gives the following 'H NMR spectrum? 4H 3H 2H TH PPMExplanation / Answer
Except question 9 , remained all are correct
Addition of HCN to ketone is nucleophilic addition.
For 9) option a is correct answer.
CN- is nucleophile that adds to carbonyl carbon at first step. So it will be considered as nucleophilic addition reaction.
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