Carboxylic Acids By Joshua Hamlett

What are carboxylic acids?  Carboxylic acids are compounds with a –COOH group.  They can only be found at the end of a carbon chain.  They are acidic due to the hydrogen in the negative COOH.  When it forms a salt, however, the hydrogen is replaced by a metal.

How to name these acids.  There are two different ways to name the carboxylic acids.  You can use the common name. (Ex. Acetic acid) or you can use the IUPAC name which uses the suffix “oic” (Ex. Ethanoic acid)  To figure out the IUPAC name you count the number of carbons in the carbon chain. (Ex. 1 carbon=Methanoic acid, 3 carbons=Butanoic acid)

Properties of Carboxylic Acids.  Probably the most important property is the one responsible for their name, acidity.  Solubility is another property in these acids. (The solubility of these in water is similar to that of alcohol.)  The boiling point is much higher than that of hydrocarbons, alcohols, or ethers.  The unbranched acids that are liquid in room temperature have a very revolting smell.

Video about Carboxylic Acids  chemistry/carboxylic-acids-derivatives/naming- carboxylic-acids-sal/carboxylic-acid-naming.html chemistry/carboxylic-acids-derivatives/naming- carboxylic-acids-sal/carboxylic-acid-naming.html

More about Carboxylic acids  They are organic molecules  React like dilute mineral acids  Are weak acids

Interesting facts about carboxylic acids!  Microwave popcorn contains a type of carboxylic acid called perflourooctanoic, and are very dangerous. The same acid is used for non-stick products that you use to cook!  It is also found in “virtually all junk food wrappers”  The more exposure to perflourooctanoic acid can cause an increase for the likelihood of thyroid disease in children.

Pictures of stuff containing carboxylic acids

Examples of carboxylic acids  1. Aspirin  2. Citric Acid  3. Tartaric Acid  4. Vitamin C

Quiz!!  1.) What is the system for naming carboxylic acids?  A. IWLT  B. IUPAC  C. IUPUC  2.) What replaces the hydrogen when the acid forms a salt?  A. noble gas  B. metal  C. Another nonmetal

Quiz continued!  3.) What vitamin is an example of carboxylic acids?  A. Vitamin D  B. Vitamin E  C. Vitamin C  4.) What suffix do you use when naming these acids?  A. “oic”  B. “ate”  C. “ous”

Quiz cont.!  5.) Which of these is NOT a name for a carboxylic acid?  A. Butanoic  B. Ethanoic  C. Chlorate  D. Benzanoic

Works Cited   m m     kids-high-pfoa-alters-thyroid/ kids-high-pfoa-alters-thyroid/