QUESTION 6 Which of the following haloalkanes would not undergo an SN2 reaction?

Question

QUESTION 6 Which of the following haloalkanes would not undergo an SN2 reaction? o (CH3)2CHI O CH3Cl o (CH3)3CBr o CH3CH2Br O CH.CH2CH2l QUESTION 7 Which statements apply to an SN1 reaction? I) The rate limiting step of the reaction involves the alkyl halide and the nucleophile. II) The order of reactivity is methyl> 1 > 2 > 3 (i.e., methyl is most reactive) III) The rate limiting step of the reaction involves only the alkyl halide. IV) There is an intermediate carbocation. O I, II O III, IV O I, IV QUESTION 8 Which statements apply to an SN2 reaction? I) The rate limiting step of the reaction involves the alkyl halide and the nucleophile. II) The order of reactivity is methyl> 1 > 2 > 3 (i.e., methyl is most reactive) III) The rate limiting step of the reaction involves only the alkyl halide. IV) There is an intermediate carbocation. O I, II O II, IV

Explanation / Answer

6)

I,II,IV,V are all primary halogen

III is tertiary halogen

For SN2, rate is

primary > secondary > tertiary

tertiary is negligible. It can’t take place via SN2

Answer: option 3

7)

In SN1 reaction, carbocation is formed as intermediate and rate depends only on concentration of alkyl halide

III and IV are correct

Answer: option 2

I am allowed to answer only 1 question at a time

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