5. Of the following options, which would in the most E1 product when the substra

Question

5. Of the following options, which would in the most E1 product when the substrate is an alcohol? Answer is B. Explain why. 6. Which of the following would have the fasted rate of reaction when mixed with iodomethane? Answer is B. Of the following options, which would result in the most E1 product when the substrate is an alcohol? Assume the same conditions for each (ie, all the same substrate, same temperature, same reaction time). 5. A. Mix the alcohol with water B. Mix the alcohol with nitric acid. C. Mix the alcohol with hydrochloric acid. D. Mix the alcohol with methanol. E. There is no good way to eliminate an alcohol. 6. Which of the following would have the fastest rate of reaction when mixed with iodomethane? A. Acetylide (HCC) B. Amide (NH2) C. Chloride (CI) D. Cyanide (NC-) . E. Hydroxide (HO)

Explanation / Answer

5. Alcohols undergo elimination reaction by dehydration.

To this we need to convert OH group (bad leaving group) into good leaving group H2O by protonation with acids.

Here , HNO3 is strong acid than HCl and protonates readily than HCl . Hence option B.

6. It also an example for Elimination (E2) of alkyl halides.

For this we need storng base to remove proton . Among the given Amide (NH2- ) is stronger than others. A,C,D and E are not much strong as B. Hence option B

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