10.4 Carboxylic Acids Esters Esterfications. Carboxylic acids A carboxylic acid is an organic compound that contains the carboxyl group. Examples include.

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Presentation transcript:

10.4 Carboxylic Acids Esters Esterfications

Carboxylic acids A carboxylic acid is an organic compound that contains the carboxyl group. Examples include acetic/ethanoic acid Oxalic acid Citric acid

The functional group is composed of two other functional groups, Naming carboxylic acids is straight forward: Name the longest chain of carbons as before Replace the “e” on the end of the name with “oic” acid Hydroxyl group Carbonyl group propane Propanoic acid

Khan academy c-chemistry/carboxylic-acids- derivatives/naming-carboxylic-acids- sal/v/carboxylic-acid-naming

Name the following acids 3-methylheptane 3-methylheptanoic acid nonane nonanoic acid

Esterification Esterification is a reaction between a carboxylic acid and an alcohol, which creates an ester and water. It is a sub category of a condensation reaction because water is a product

Draw the esterification reactions between the following pairs of reactants butanoic acid and ethanol pentanoic acid and methanol

Naming esters is somewhat annoying because the names come from the names of the alchohol and carboxylic acid that they are made from. Made from butanoic acid and ethanol Parent chain= Name the chain of carbons that came from the carboxylic acid, but drop the “oic acid” and replace with “oate” Branch chain =Name the chain of carbons that came from the alcohol as you would a branch of the main chain Leave a space between the branch and parent chain names

Tip: Drawing out esters in structural diagrams is often easier to visualize the compound

Tip: how do you tell which chain used to be the carboxylic acid??? Look for the carbon that is attached to two oxygen (one double bond, one single bond)

cohols/esterification.html cohols/esterification.html

Example This group of carbons comes from the acid b/c it has the double bonded oxygen Treat this group of carbons as a branch butanoateethyl ethyl butanoate

Name the following esters H H H

Draw the following esters and identify the alcohol and acid that it was synthesized from methyl hexanoate butyl methanoate propyl propanoate

Homework Complete practice questions