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For each of the molecules below, list the intermolecular forces that exist betwe

ID: 476572 • Letter: F

Question

For each of the molecules below, list the intermolecular forces that exist between molecules in a sample of a pure substance. Then answer the following questions. Which molecule will have the greatest viscosity? Which molecule(s) will best dissolve in acetonitrile CH_3CN? Which two of the molecules above would be miscible with one another? Consider the molecules A dissolved in solvent of molecule D. List the intermolecular forces that exist between the solute and solvent. List any intermolecular forces that are lost when solute-solute or solvent-solvent intermolecular associations are broken and not reformed when solute-solvent interactions form. Predict if the formation of solution will be endothermic, exothermic, or ideal, explain your logic.

Explanation / Answer

A) The intermolecular force of attraction exesting between toluene molecule is london forces or dispersive forces

B) The intermolecular force of attraction exesting between acetic acid molecule is hydrogen bonding

C) The intermolecular force of attraction exesting between chloroform molecules is dipole-dipole forces

D)  The intermolecular force of attraction exesting between Ethyl acetate molecules is dipole-dipole forces

E)  The intermolecular force of attraction exesting between Tetra-methylammonium chloride being ionic solid

anionic and cationic speecies show strong electrostatic force of attraction

J) among all these molecule Tetra-methylammonium chloride is solid and all other are liquid, Acetic acid will have

higher viscosity because of hydrogen bond which is a special type of strong dipole-dipole interaction between

molecules

K) Chloroform will be soluible best in Acetonitrile because it can form hydrogen bonding with acetonitrile Cl3C-H---

NCCH3

L) Toluene and chloroform, Toluene and ethylacetate , chloroform and Ethylacetate are completely miscible with

each other

M) i) dipole-induced dipole interaction

ii) dipole-dipole interaction between ethylacetate is lost due to introduction of toluene molecules between those

molecules

iii) the formation of solution must be exothermic as strong dipole-dipole interaction is broken between the ethyl

acetate molecule and weak dipole-induced dipole interactions are formed, excess energy liberated in the form

of heat