Sn1 Stereochemistry and Energy [closed]








**Closed.** This question is [off-topic](/help/closed-questions). It is not currently accepting answers.
 
 






---








 **Homework questions** must demonstrate some effort to understand the underlying concepts. For help asking a good homework question, see: [How do I ask homework questions on Chemistry Stack Exchange?](https://chemistry.meta.stackexchange.com/questions/141/how-do-i-ask-homework-questions-on-chemistry-stack-exchange)




Closed 6 years ago.








[Improve this question](/posts/71674/edit) 



1. [![enter image description here](https://i.stack.imgur.com/9LD5a.png)](https://i.stack.imgur.com/9LD5a.png)


Sn2 has simultaneous bond breaking and forming because it's concerted.


Sn1....does it occur with a loss of stereochemistry at the reactive center? An online textbook says so. 


Sn1 has both retention and inversion of config. So don't know which one fits Sn1. Only one statement is true for SN1. 


2. Which of the energy diagrams shown below represents an exothermic SN1 reaction?


[![enter image description here](https://i.stack.imgur.com/ihsYF.png)](https://i.stack.imgur.com/ihsYF.png)


It would be graph A because Sn1 is stepwise two steps. And it's exo because of -E? 


