CHEM 53.10 - Hydrophobic Effect

Hydrophobic effect

Tendency of water to minimize contact with hydrophobic molecules

Increase

Fill in the blank: In the presence of hydrophobic solutes, there is an ___ (increase/decrease) in ordering of the water molecules around the solutes.

Remain constant

Fill in the blank: In the breaking/re-forming of H-bonds, the entropy of water molecules ___ (increase/decrease/remain constant)

Decrease

Fill in the blank: In the presence of non-polar molecules, the entropy of water molecules ___ (increase/decrease/remain constant)

Increase

Fill in the blank: When nonpolar molecules aggregate or order themselves, the entropy of water molecules ___ (increase/decrease/remain constant)

False

T or F: The aggregation of nonpolar molecules is primarily due to a London Dispersion Forces between them

True

T or F: Folding of proteins is influenced by the hydrophobic effect

amphipathic/amphiphilic

Molecules that are both hydrophobic and hydrophilic