6. (6 pts.) From the solubility experiment you will have concluded that biphenyl

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6. (6 pts.) 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 BOTH 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 biphenyl solute hexane solvent solute/solvent dipoe rdwed dipole indice dipoe Give a brief 1-sentence explanation for why biphenyl is soluble in hexane in terms of the various energies associated with the IMFs involved, and the entropy of the process. 7. (6 pts.) From the solubility experiment you will have concluded that biphenyl is not very soluble in ethanol. On the following solute/solvent representation, state ALL of the IMF that need to be broken in BOTH the biphenyl solute and also in the solvent hexane and indicated which would be the STRINGEST IMF in the solid and the STRONGEST IMF in the solvent. Draw a representation of the STRONGEST IMF in the solid and the STRONGEST 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 th solute/solvent mixture as small or large 6 14

Explanation / Answer

Answer :

6) Biphenyl is a non-polar compound. It has only weak dispersion forces. The solvent is hexane, which is also a non-polar compound. So, the biphenyl is soluble in hexane. The entropy of the system increase as the disorderness increases

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