CHM 2045C Pretest #1   Name: __Answers____

 

Module Four: Part L Bond Angles           10 points

What is the bond Angle in the following structures:

 

       

_s#4=109.5___1.                           _ s#4=109.5___4.

_ s#3=120    __2.                          _ s#3=120 ___ 5.

_ s#4=109.5__3.                           __s#4=109.5___6.

 

                         

___ s#2=180__7.              __ s#4=109.5 __ 8.  __ s#4=109.5—9.

                                         Actual 104.5                        Actual 107

 

___10.       ____11.

_____ s#3=120__10.                         _____ s#2=180__10.

 

                            

12. _s#3=120__         13._s#4=109.5__    16. __s#4=109.5__

                                 14._s#4=109.5__

                                 15. _s#4=109.5__

 

              

17. _s#4=109.5__                      20. _s#2=180_

18. _s#3=120____

19. _s#4=109.5__

 

 

Bonus: (You figure these bonus answers)

 

___21.   ___23.

___22.                                   ___24.

Steric Numbers do not predict bond angles within rings of carbons, but do for attachments to the ring