Why is delta S negative when a nonpolar molecule such as limonene is dissolved i

Question

Why is delta S negative when a nonpolar molecule such as limonene is dissolved in water? In solid NaCl, both the sodium and chloride ions in an field. Frozen water (ice) also forms a lattice structure, however, in the presence of an electric field, significant proton mobility occurs in ice. Explain Name the four noncovalent interactions that occur within and between biomolecules that facilitate life processes at the molecular level. Which of these noncovalent interactions directly or indirectly involve H_2O molecules? The total carbonate pool in blood plasma (blood without red blood cells) is 0.025 M and consists of both HCO^-_3 and HCO^- _3 and CO_2(aq). The pK_a for the dissociation of H_2CO_3 to produce HCO^- _3 + H^+ at 37 degree C is 6.1. Because H_2CO_3 is readily produced in blood from dissolved CO_2(aq) H_2O, in a reaction catalyzed by the enzyme carbonic anhydrase (see Figure 2.39), Co_2(aq) can be considered the conjugate acid and HCO_3, the conjugate base in the bicarbonate buffering system. a. What is the ratio of HCO^- _3 and CO_2 (aq) in blood plasma at pH 7.4? b. What are the individual concentrations of CO_2 (aq) and HCO^- _3 under these same conditions? Membrane proteins in a cell can be covalently labeled with a fluorescent compound. Photobleaching of the cells with a laser initially creates a nonfluorescing spot in the plasma membrane that can be observed by fluorescence microscopy. Exp ain why this nonfluorescing spot disappears over time. The pK_a for a typical long-chain fatty acid is ~ 5. Explain why long-chain fatty acids can form micelles in solutions with pH > 7 but are insoluble in solutions with pH

Explanation / Answer

9.Non polar molecules do not have permanent dipoles that tend to attract one another or creating permanent weak intermolecular bonds that hold the molecules together in liquid or solid status. Non polar molecules do not mix with polar water molecules.

Water tends to form ordered cages around the nonpolar molecule and this tends to decrease in the entropy hence delta s is negative

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