rings, acids and amines
- Created by: Harriet
- Created on: 31-01-16 19:50
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- Rings,Acids and Amines part 2
- Carboxylic Acids
- polar molecules
- very soluble in water as they form hydrogen bonds with the water molecules
- weak acids
- dissociate easily in water to form carboxylate ions and H+ ions
- carboxylic acids react with the more reactive metals to form and salt and hydrogen
- carboxylic acids react with carbonates to form a salt, water and carbon dioxide
- Carboxylic acids are neutralised by bases to form salts and water
- polar molecules
- esters
- alcohols are drawn second but named first
- carboxylic acids are drawn first but named second
- making esters
- carboxylic acids + alcohol= ester +water
- conditions: concentrated sulphuric acid
- acid anhydride +alcohol =ester+ carboxylic acid
- Conditions: no catalyst
- carboxylic acids + alcohol= ester +water
- uses
- food flavourings and perfumes
- Acid hydrolysis splits the ester into carboxylic acid and an alcohol.
- conditions: reflux and a dilute sulphuric acid
- base Hydrolysis splits the ester into a carboxylate salt and alcohol
- conditions: reflux and dilute sodium hydroxide
- Fatty Acids
- Saturated fatty acids
- no double bond
- NAMING anoic acid
- cause bad cholesterol
- bad cholesterol can clog blood vessels which increases the risk of a heart attack
- unsaturated fatty acids
- double bonds
- NAMING enoic acid
- cis configuration
- naturally occuring
- good cholesterol
- removes bad cholesterol, taking it to the liver to be destroyed. high levels of good cholesterol prevent heart disease
- good cholesterol
- naturally occuring
- trans configuration
- man made through hydrogenation
- bad cholesterol
- man made through hydrogenation
- triglycerides
- triester of glycerol + 3 fatty acids = triglyceride +3 waters
- triglyceride + methanol + glycerol +methyl ester
- methyl ester = biodeisel
- biodeisel is a renewable fuel made from fats that can be used in diesel engines
- Untitled
- methyl ester = biodeisel
- Saturated fatty acids
- Carboxylic Acids
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