Adding surfactants in non polar solvent, the micelles structure will look like
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Surfactants reduce surface tension and form micelles by aligning their hydrophobic tails towards non-polar solvents and hydrophilic heads towards polar solvents.
To understand how surfactants behave in a non-polar solvent, it's important to know the structure of surfactant molecules. Surfactants have a dual nature, consisting of a hydrophilic (polar) head and a hydrophobic (non-polar) tail.
In a non-polar solvent, the structure of micelles will be such that the polar heads face inwards, away from the solvent, and the non-polar tails face outwards, interacting with the non-polar solvent. This is because the non-polar tails are more compatible with the non-polar solvent than the polar heads.
The option describing this arrangement correctly is:
Option (a) is the correct answer, as it shows the polar heads inside the micelle and the non-polar tails facing the non-polar solvent, forming what is called a reverse micelle structure.
Let's break it down further:
Polar Heads: These are hydrophilic and are not compatible with non-polar solvents, so they face inward in the micelle structure away from the solvent.
Non-Polar Tails: These are hydrophobic and align themselves with the non-polar solvent, facing outward.
Reverse Micelle Formation: In non-polar solvents, the formation of reverse micelles is favored because it minimizes the energetically unfavorable interactions of the polar heads with the solvent.
Therefore, option (a) correctly depicts the way surfactants arrange themselves in a non-polar solvent.
