00:02
Okay, with this problem, we want to assign the different compounds, hexane, two methyl -pentane and three methyl -pentane as to which ms -specs do they correspond to.
00:14
We begin with hexene.
00:16
Hexene correspond to spec b.
00:18
The reason being that is because hexane is a straight chain arcane in which molecular ion peak is usually present.
00:27
And we observe that in spectrum b, a weak peak presenting the molecular i .o.
00:32
Is observed.
00:33
And this peak is correspond actually is c6h14 plus of mz 86.
00:41
And this pick is only observed in spectrum b.
00:46
It is not in spectrum a and spectrum c.
00:49
So for that reason, we are saying that p corresponds to hexane.
00:54
And also we have this base, the base pick, which is c4 h .h9 plus of mz 57.
01:02
It is present due to the loss of an ethyl radical present in spectrum a and b, and it is seen in small abundance in c.
01:18
Now going on to n -metall -pentane.
01:23
So n -metall -pentane is said to be represented by spectrum c.
01:26
This is basically because two -metal -pentane is a branched alkan.
01:31
So in branched alkan, the molecular ion peak, it is not present...