hydrophobic effects origin in entropy change

Question 1

preference of nonpolar groups for nonpolar environment due to?

Answer 1

due to unfavorable ∆S in water, but for the water and not for the nonpolar group?

Question 2

overall ∆S

Answer 2

when a hydrophobic surface is exposed to bulk H2O if the nonpolar group (in surface) associate with each other.

Question 3

explain why nonpolar substance spread throughout water is less entropy change than nonpolar surface on water?

Answer 3

will be a lower entropy value if bulk H2o made cages around the nonpolar groups as bulk H2Os H-bond network is more ordered than if H2O randomly H-bonds to other H2Os or to solute.

Question 4

more order ∆S?

Answer 4

more order is negative S, less order is positive S

Question 5

what is more important? the surroundings or the system?

Answer 5

The surroundings, as there is more of it.