During micelle formation:

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$ΔH = + ve; ΔS = + ve$

$ΔH = - ve, ΔS = + ve$

$ΔH = + ve, ΔS = - ve$

answer is A.

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Detailed Solution

For any spontaneous process, entropy should always increase hence, ΔS>0 for micelle formation. Micelle formation decreases the stability of the colloidal solution, so energy of the mixture should increase which means ΔH>0.

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