Quiz Section Exercise: Mechanisms

OMG!  Horrible mistake - The ether formation should actually be a dehydration (thanks Dani).  I just really wanted to show you the mechanism for ether formation!

List of Reactions

Here's a list of the reactions you have learned so far.  Make sure you can write the products and know the catalysts that are necessary for each reaction.  The starred reactions are the ones that you can possibly write a mechanism for.

addition reactions: adding a molecule to an alkene to get an alkane product

 - hydrogenation *

 - halogenation *

 - hydrohalogenation (Markovnikov's rule) *

 - hydration (Markovnikov's rule) *

polymerization *

reactions of aromatic compounds: adding a functional group to a benzene ring

 - halogenation

 - nitration

 - sulfonation

reactions of alcohols: reacting with the -OH group

 - dehydration (Saytzeff's rule; the only way you know how to make an alkene) *

 - formation of ethers *

 - alcohol oxidation (consider for primary and secondary alcohols)

reactions with thiols: reacting with the -SH group

 - oxidation (creating disulfide bonds) *

aldehydes and ketones: reacting with C=O group

 - oxidation

 - tollens' test

 - benedict's test

 - reduction

 - addition

- of water *

- hemiacetal formation (including cyclic acetals) *

- acetal formation *

Answers to Practice Exam 2 (2011)

You can find a blank copy of this practice exam here.

Answers to Practice Exam 2 (2010)

Here are the answers to Practice Exam 2 from 2010.  Please note that you should always put lone pairs on your atoms, even though there are no lone pairs written out in this answer key.

Extra Practice Exam

We'll be going over Practice Exam 2 from 2011 in quiz section tomorrow, which you can find under "exams" on the main Chem 220 website.  However, here's another practice exam (from 2010) for your studying pleasure.

Quiz Section Exercise: Ketones and Aldehydes

Note:  there's a mistake on the second page.  For last step of the last reaction for the section asking to "fill in the missing reactants, products, or catalysts," the catalyst should be H2 and Pd, Ni, or Pt instead of KMnO4.

Quiz Section Exercise: Reactions, Aromatics, Alcohols, Thiols, Ethers