- What types of molecules are esters?
-COOC- within the molecule.
example.
Naming esters
The carboxylic acid group gives the OATE part, the alcohol gives the fragment
Examples
1. propanol + ethanoic acid
propyl ethanoate + water.
C3H7OH(aq) + CH3CO2H(aq)
CH3CO2C3H7(aq) + H2O(l)
2. butanol + ethanoic acid
butyl ethanoate + water.
C4H9OH(aq) + CH3CO2H(aq)
CH3CO2C4H9(aq) + H2O(l)
- Where are esters found in nature?
- what are manufactured esters used for
Structure of fats
- Fats can be formed by the reaction of glycerol and 3 fatty acid molecules. Fatty acid molecules are long carbon chains with a carboxylic acid group on the end.
- Inside the fats molecule is an ester functional group.
Kemia book section 35
341. Mitkä orgaaniset yhdisteet ovat elimistön ravintoaineita?/ Which organic compounds are used as nutrients by your body?
342. Mistä yhdisteistä rasvat muodostuvat kemiallisessa reaktiossa?/ Which compounds are used in the reaction to make fats?
343.
a) Mihin yhdisteryhmään rasvat luokitellaan tunnusomaisen ryhmän perusteella?/ Under which groups of compounds are fats classified on the basis of their functional group?
b) Mistä a-kohdan yhdisteryhmän yhdisteet voi tunnistaa?/ What is the functional group of this class of organic molecules?
344. Miten tyydyttymättömien ja tyydyttyneiden rasvojen rakenne eroaa toisistaan?/ How does the structure of saturated and unsaturated fats differ from each other?
345. Mitkä seuraavista rasvahapoista ovat tyydyttyneitä ja mitkä tyydyttymättömiä?/ Which of the following fatty acids are saturated and which are unsaturated?
346.
a) Mitä eroa on eläin- ja kasvirasvoilla ulkoisesti ja rakenteellisesti?/ What is the difference between plant fats and animal fats externally and structurally?
b) Kummat ovat terveellisempiä?/ Which are healthier?
347. Mitä tehtäviä rasvoilla on elimistössä?/ What are fats used for in the body?
348.
a) Mitkä vitamiinit ovat rasvaliukoisia?/ Which vitamins are fat soluble?
b) Mitä rasvaliukoisuus tarkoittaa?/ What does fat soluble mean?