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Most websites mention that it is endothermic and some mention that it is endothermic at low temp. and exothermic at high temp. Nor do I know the correct answer neither I can guess the reason for any of them. An explanation would be a great help.

dishant ranparia
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    Some references and quotes would help to attract good answers. // Review the guides Asking and How to ask to prevent misunderstanding, need of clarification, objections, downvoting or closure. – Poutnik Jul 18 '23 at 03:38
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    Also, micelle formation starting from what? From monomers in solution? Write the full equation to which you are referring. – Buck Thorn Jul 18 '23 at 08:40
  • Do you mean enthalpy? The enthalpy of micelle formation (say SDS in water) is normally small, the main effect is a huge entropy increase ($\sim 140$ J/K/mol) making $\Delta G$ negative. The enthalpy change is a mix of negative change moving the tails from water and a positive term of repulsion between charge on head groups. – porphyrin Jul 19 '23 at 07:44

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