✔ 最佳答案
Hexane is non-polar, while ethyl acetate (EtoAc) is polar. Therefore, in a solvent system of the mixture of hexane and ethyl acetate, the higher the fraction of ethyl acetate, the more the polar of the solvent system is.
The fraction of ethyl acetate in the solvent systems :
In 1 : 1 system = 1 / (1 + 1) = 0.50
In 1 : 2 system = 2 / (1 + 2) = 0.67
In 1 : 3 system = 3 / (1 + 3) = 0.75
In 2 : 1 system = 1 / (2 + 1) = 0.33
In 2 : 2 system = 2 / (2 + 2) = 0.50
In 2 : 3 system = 3 / (2 + 3) = 0.60
In 3 : 1 system = 1 / (3 + 1) = 0.25
In 3 : 2 system = 2 / (3 + 2) = 0.40
In 3 : 3 system = 3 / (3 + 3) = 0.50
The most polar solvent system is 1 : 3.
This is because it contains the highest fraction of ethyl acetate.
The least polar solvent system is 3 : 1.
This is because it contains the lowest fraction of ethyl acetate.
What hex:EtoAc solvent system is most/least polar?
1:1, 1:2, 1:3, 2:1, 2:2, 2:3, 3:1, 3:2, 3:3