3. Answer the following questions based on the reactions written below.(9) nueli

Question

3. Answer the following questions based on the reactions written below.(9) nueliophile (amion 01) CH3NH2 CH3NH2, ? ???? ?? 20 ? ?????.bogoo oniwello otion a. What would happen to the rate if the nucleophile concentration is doubled? Jhe rede would decrease b. What would happen to the rate if the electrophile concentration is halved? The rade would increase (. c. What is the rate law for this reaction? Increased electrophili concentration nesults decreases proportiorolby) e decreased [] resudu m invesessed, & vice versa 4) In the reaction below the sodium hydroxide deprotonates the alcohol to form an ionic intermediate. It then undergoes a Sn2,reaction. Please show the product and the mechanism. (12) Te

Explanation / Answer

3)

Since, in above reaction, there will be formation of tertiary carbocation occurs, which will be the rate determining step, so the reaction will proceeds through SN1 reaction, whose rate equation is given by

RATE = [Alkyl halide]

or RATE = [ELECTROPHILE]........... (Because alkyl halide forms electrophile)

So, on this basis

a) As we can see there is no involvement of nucleophile in the rate equation, so it is independent of concentration of nucleophile. Hence, doubling the concentration of nucleophile would not have any effect on the rate.

b) As rate is proportional to concentration of electrophile, so rate is also halved when concentration of eletrophile gets halved.

c) rate law would be:

RATE = [ALKYL HALIDE]

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