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ABRAHAM M. H.WILEY‐VCH Verlag GmbHChemischer InformationsdienstAbraham, M.H. (1980) Hydrophobic effect of the methylene group: enthalpy and entropy contributions. J. Am. Chem. Soc. 102: pp. 5910-5912M. H. Abraham, J. Am. Chem. Soc. 102 (18), 5910 (1980)....
water and forces it to re‐form around the nonpolar molecule, making a cage of sorts around the nonpolar molecule. This cage is an ordered structure, and so is unfavored by the Second Law of Thermodynamics, which states that spontaneous reactions proceed with an increase in entropy (disorder)...
The way I understand it intuitively is that these water molecules are restricted in the orientations they can assume, becoming more ordered to maximise hydrogen bonding, so have an overall lower entropy than if they were free to tumble like in the bulk solution. Similarly, the agg...
[19, 20], significantly decreases with increasing temperature. This value almost entirely corresponds to a negative entropy change that results from the ordering of the water structure, while the negative enthalpy ofhydrogen bondsformation is compensated to a great extent by the positive enthalpy of ...
Thus, the force responsible for the compactness and integrity of protein structures is most likely due to the hydrophobic effect. Unfortunately, the analysis cannot be as exact as in the dissolution of hydrophobic compounds, since the entropy of the unfolding process is not corrected for the combin...
What is the effect of temperature on the viscosity of a liquid? How do the laws of thermodynamics apply to living systems? Explain why in cold water oil spreads, but in hot water it remains in the form of drops. Why do you use h for entropy?
One often observes entropy–enthalpy compen- sation in hydrophobic binding. At higher temperatures, solute clustering becomes less entropy driven than enthalpy driven. The energy needed to form cavities in a cohesive solvent like water explains the low solubility of lipophilic solutes in water, and ...
How does the hydrophobic effect increase entropy? What factors affect the fluidity of an animal's cell membranes? What causes surface tension? Define dispersion forces. Describe salting out and its relationship to the hydrophobic effect. What is the principle of osmosis?
由于水分子的释放到大量的水集团中，水中非极性基团聚集，将引起熵的提高。水分子与疏水表面作用在非极性分子周围形成“笼【（分子或原子）笼状排列】”，因此增加了有序性。总的来说，蛋白质折叠产生的熵增是由于水分子有序性减小造成的。P.S. 虽然翻译出来的，不过感觉没有语境，有点点摸不着头脑。