Question

7. Which of the following statements is (are) true about a reaction that follows an Sul mechanism? A. The reaction is fastest with primary alkyl halides. B. The reaction exhibits a one-step mechanism. C. The reaction rate increases as the leaving group ability increases. D. The reaction rate increases as the strength of the nucleophile increases. E. Statements (The reaction rate increases as the leaving group ability increases) and (The reaction rate increases as the strength of the nucleophile increases) are both true. 8. Rank each of the following halides in order of increasing reactivity in an Ss2 displacement reaction. 1. (CH3)2CHCI 2. CH CH Br 3. CH3CH2C1 A. 1; 2; 3 B.3; 2; 1 C. 1;3; 2 D.2; 1:3 E. 3; 1:2 9. What is the substitution product of the reaction shown below? B.B c.c

Answer 1

increase as The reaction rate leaving group abilit increase NYEAction, Teaetion pro cess ed For by formation of stable earbocation. the ability of leaving rap As than formation of carbocation increase is also increase and the Yate of the reaction increase

(CH),CH-eI CHyCH2elCHs CH-6r 2 Increasing reactivity of SN2 Teaction. has greater leavina raup abilty Br than leave easily in Cl. Br So Tran sition state of SN2 reaction the (es)CH-eI sterie hindrance has due methy roup in to leving op bonding carbon nueleophile ean't attack easily So Tate f reactivity will slow.

HTH Br Bre CN H CN are formed both SN1 reaction due to Secan dary path followed alkyl brouid e.