Explain in detail, using thermodynamic principles, why the mixing of pure chemicals to form a homogeneous mixture is a so called spontaneous process, while the separation of that mixture into its pure (or nearly pure) species is not.

Pasteurized, homogenized, organic, hormone-free: What’s up with your milk?

What Is Homogenized Milk and how is it made?

When did milk start being homogenized? - TimesMojo