FATS AND OILS PART 2

Question 1

What do fats and oils do

Answer 1

concentrated energy source

insulation and protection

Transport fat soluble vitamins

polar in blood/non polar in fats and oils

Question 2

3 ester links

Answer 2

O-=O x3

Question 3

fats

Answer 3

saturated C-C

Question 4

oils

Answer 4

unsaturated contain C=C

Question 5

saturated general formula

Answer 5

CnH2n+1

Question 6

unsaturated formula

Answer 6

CnH2n-1 so 1 C=C

CnH2n-2 so 2 C=C

Question 7

fats vs oils packed

Answer 7

fats close so stronger LDF so higher mp

oils not due to kinks from C=C so lower mp

Question 8

how are fats and oils made

Answer 8

alcohol - glycerol (3C each with ester link) and carboxylic acid (fatty acid chains (10-20C)(3)

OH lost in acid and H from alcohol

H2O product too

Question 9

breaking down ester

Answer 9

hydrolysis

Question 10

glycerol name

Answer 10

propan-1,2,3-triol

Question 11

test for unsaturation

Answer 11

Br solution - more unsatured more decolourise

Question 12

oil hardening

Answer 12

remove some double bonds by adding Hydrogen using NI catalyst