Carboxylic Acids and Esters

Naming carboxylic acids

Acidity of carboxylic acids

Solubility of carboxylic acids in water

• C6 actually 

• They also stink  of vomit and body odour

Delocalisation

Strength of carboxylic acids

Salt formation of carboxylic acids

Put COO- Na+

Oxidation of methanoic acid

Esterification

• That one oxygen will only have 2 bonds.

• Concentrated acid catalyst needed

• Name has 2 parts as there are 2 carbon chains

Uses of esters

Hydrolysis of esters

Saponification

• Goes to completion unlike ester hydrolysis

Fats- ignore soap for now

• Branched= Oil

• Straight= Fat

• Broad group of organic molecules: fat soluble vitamins, fats, waxes, steroids

• Carbon rich with little or no polar molecules

• Triglycerides are composed esters. Composed of an alcohol (glycerol)- propan1,2,3-triol and three fatty acids/ carboxylic acids. Ester bond

• Formed through condensation reactions.

Soap making

• Saponification of lipids produces 3 salts of fatty acids and glycerol (alcohol).

• Made by boiling lipids with potassium hydroxide.

Biodiesel

• Can also be made from lipids

• Triglyceride is are reacted with alcohols ( and catalysed by KOH) to form 3 methyl esters and glycerol.

• 3 CH3OH so one for each fatty acid