biphenyl solute ethanol solvent Give a brief 1-sentence explanation for why biph
ID: 579608 • Letter: B
Question
biphenyl solute ethanol solvent Give a brief 1-sentence explanation for why biphenyl is not soluble in ethanol in terms of the various energies associated with the IMFs involved, and the entropy of the process. 8. (6 pts.) From the solubility experiment you will have concluded that malonic acid is soluble in water. 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 indicate which would be the STRONGEST 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 the solute/solvent mixture as small or large- malonic acid solute water solvent solute/solvent Give a brief 1-sentence explanation for why malonic acid is soluble in water in terms of the various energies associated with the IMFs involved, and the entropy of the process. 15Explanation / Answer
1. Biphenyl is not soluble in ethanol because there are no intermolecular forces of attraction between biphenyl and ethanol.
Explanation: Biphenyl is a completely non-polar molecule having only carbons and hydrogens, but ethanol is a polar compound having carbons, hydrogens, and oxygen (heteroatom). Hence intermolecular forces do not exist between them.
The entropy for mixing biphenyl in ethanol is negative because of insolubility.
2. Malonic acid is soluble in water because there are i) dipole-dipole attractions and ii) hydrogen bonding attractions between malonic acid and water.
Explanation: Malonic acid is polar and water is also polar, hence intermolecular forces exist between them.
The entropy of mixing malonic acid in water is positive because of solubility.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.