00:01
Hi, in this question we are given with fatty acids and we are asked to arrange these fatty acids in increasing order of melting point.
00:08
For this, first we need to differentiate these fatty acids as saturated or unsaturated.
00:20
For this we need to draw the structure of all fatty acids here.
00:25
Here are the structural formulas of respective fatty acids.
00:29
Let us differentiate between unsaturated and saturated.
00:33
Alpha -linoic acid is having double bond, therefore it is unsaturated, having two double bonds.
00:42
Oliac acid is having one double bond, it means it is also unsaturated.
00:47
Steric acid is having no double bond, therefore it is saturated fatty acid.
00:54
Palmettoic acid is having double bond, which is one in number, therefore it is unsaturated.
01:00
Saturated fatty acid and parmetic acid is having no double bond therefore it is a saturated fatty acid now we will discuss the relation of melting point for saturated fatty acids and unsaturated fatty acids we can say in case of saturated fatty acid melting point is directly proportional to molar mass of fatty acid and for unsaturated fatty acids we can say melting point point is inversely proportional to number of double bonds present in it.
01:41
Or if the number of double bonds are same, then we will consider the molar mass of fatty acid.
01:51
Higher the molar mass, higher will be the melting point of fatty acid.
01:56
Here are the saturated fatty acids and here are the unsaturated fatty acid...