Carboxylic acid

Question 1

what is carboxylic acid ?

Answer 1

Carboxylic acid has general formula of CnH2n+1COOH
with a functional group of
-COOH

they undergo similar chemical reactions eg>
combustion,all typical acid reaction and esterfication and they are soluble in water

Question 2

describe esterification?

Answer 2

carboxylic acid reacts with reversibly with alcholo ; when heated with under reflex heat in a water bath ,cataylsed by sulfuric acid to form ester and water (condensation reaction)

note:ester are insolube in water

Question 3

Physical properties of Esters?

Answer 3

1) low boiling point hence volatile
2)sweet-smelling(hence as articial food flavorings)
3)insolube in water
4)soluble in organic water
5)less dense than water so float
6) Physcial properties

Question 4

what are isomers?

Answer 4

they have same chemical formula but different physical proterties

draw isomer of pentene:

Question 5

Describe the similarity of cond3sqtion and adfition polymerization

Question 6

Describe the 3 difference between addition and condensation polymerization

Answer 6

• Addition polymers have a monoer with only one functional group(c=c) whereas condensation reaction has more than one monoer of different functional group og -cooh,-oh
• Additon reaction does not form water as by-product but condensation reaction forms water as by-product
• Addition reaction monomers have only one carbon-carbon double bond whereas condensation reaction can have more than one carbon-carbon double bond