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12 Dec 2019

From the solubility experiment you will have concluded that biphenyl is soluble in hexane. On the following solute/solvent representation , state ALL of the IMF that need to be broken in BOT H the biphenyl solute and also in the solvent hexane. Draw a representation of the important IMF in the solid and solvent using the "dashed line" representation that we use in these packages . Do the same for the representation of the solution (right hand side of the equation below).

Characterize the energy cost associated with breaking the IMF in the solute and solvent as small or large?

Characterize the energy gain associated with making the IMF in the solute /solvent mixture as small or large?

Entropy always favors solvation (solution of a solid in a solvent) unless the overall energy requirement is large. Characterize the OVERALL energy requirement associated with making and breaking the IMF in the solute /solvent mixture as small or large?

Give a brief 1-sentence explanation for why biphenyl is soluble in hexane in terms of the various energiesassociated with the IMFs involved, and the entropy of the process.

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Nelly Stracke
Nelly StrackeLv2
13 Dec 2019

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