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Questions 17-25 refer to reaction types we have learned this semester. Following

ID: 1033486 • Letter: Q

Question

Questions 17-25 refer to reaction types we have learned this semester. Following each statement, choose one of the following four options, each with its own letter choice: a. electrophilic addition b. nucleophilic addition c. alkyl substitution d. elimination e. radical 17. homolytic bond dissociation Its in an increase of entropy 19. the reverse of elimination 20. proceeds via acid-catalyzed or base-catalyzed mechanism 21. SN and SN2 are reaction subtypes 22. hydroboration oxidation is best classified as this type of reaction 23. the carbonyl functional group acts ast this reaction type 24. one electron movement 25. nucleophilic attack cannot occur as a first step that generates an intermediate

Explanation / Answer

Answer for 17

Homolytically bond dissociation gives radicals as species.

Answer for 18

In the case of increasing entropy, no. of species should be greater. Thus, elimination will give more species.

Answer for 19

Addition(either nucleophilic or electrophilic) is reverse of elimination.

Answer for 20

In case of acid or base catalysed reaction, alkyl substitution takes place as for example esterification.

Answer for 21

SN1 and SN2 are subtypes of alkyl substitution.

Answer for 22

Hydroboration oxidation is electrophilic addition.

Answer for 23

In case carbonyl group acts as electrophile, nucleophilic addition will take place.

Answer for 24

One electron transfer species are radicals.

Answer for 25

In case if radical, nucleophile cannot attack at first step.