Lab Report - Experiment#2 - Na Hye Eunice Kim Professor...

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Na Hye Eunice Kim Professor Peterson / TA: Lisa Siu Chem 3AL, Section 103 29 June 2009 Investigating Solubility and Acid-Base Reactions In Part I , the results can be explained by G = ∆H seperationA:A + H separationB:B + H associationA:B - T S mixture . This Gibb’s free energy emphasizes that two substances can form a solution if the free energy is associated with mixing them is negative (exothermic), emphasizing that the intermolecular forces between dissimilar molecules are the same as or stronger than the forces between identical molecules. This explains why those substances with not significantly strong D-D forces such as diethyl ether, ethyl acetate, acetone, and ethanol are miscible with hexane with ID-ID, while water molecules with very strong D-D interactions from hydrogen bonding are not well mixed with hexane, causing G to be positive. In Part II , the results can be explained by similar reasoning: “Like dissolves like” which means that substances with similar intermolecular forces will dissolve in one another. Non-polar molecules such as diethyl ether, ethyl acetate, dichloromethane, and toluene are
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This note was uploaded on 11/23/2009 for the course CHEM 3BL taught by Professor Chunmei during the Summer '08 term at University of California, Berkeley.

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Lab Report - Experiment#2 - Na Hye Eunice Kim Professor...

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