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identify the strongest intermolecular interactions between each solvent and thre

ID: 1046611 • Letter: I

Question

identify the strongest intermolecular interactions between each solvent and three solids, as well as the strongest intermolecular interactions between the molecules of each solvent by completing the table below. For hydrogen bonding specify whether the molecules of the solids act as hydrogen bond donor (HBD) or just as hydrogen bond acceptors (HBA).

Water

Methanol

Hexane

Benzophenone

Malonic Acid

Biphenyl

Solvent with itself

Then comparing the strongest intermolecular interaction between the solid and the solvent with the strongest interaction in the solvent itself, predict what the best solvent for each solid and then compare it with the observed results.

Water

Methanol

Hexane

Benzophenone

Malonic Acid

Biphenyl

Solvent with itself

Explanation / Answer

Intermolecular forces

                                            Water                      Methanol                     Hexane

Benzophenone                dipole-dipole              dipole-dipole            Dispersion forces

Malonic acid                          HBA                          HBA                  Dispersion forces

Biphenyl                        Dispersion forces     Dispersion forces        Dispersion froces   

Sovent with itself                HBD/HBA                   HBD/HBA              Dispersion forces

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Best solvents for,

Benzophenone = hexane

Malonic acid = water

Biphenyl : hexane