Question

Pick an appropriate solvent from the table below to dissolve each substance. State the kind of intermolecular forces that would occur between the solute and solvent in each case.

Common polar solvents	Common nonpolar solvents
Water (H2O)	Hexane (C6H14)
Acetone (CH3COCH3)	Diethyl ether (CH3CH2OCH2CH3)
Methanol (CH3OH)	Toluene (C7H8)
Ethanol (CH3CH2OH)	Carbon tetrachloride (CCl4)

#1 State the kind of intermolecular forces that would occur between the solute and solvent in barium nitrate (ionic). Check all that apply.

(hydrogen bonding) (ion-dipole) (dipole-dipole) (dispersion)

#2 Pick appropriate solvent(s) to dissolve paraffine oil (nonpolar). Check all that apply.

Hexane (C6H14) Ethanol (CH3CH2OH) Methanol (CH3OH)

Toluene (C7H8) Water (H2O) Carbon tetrachloride (CCl4)

#3 State the kind of intermolecular forces that would occur between the solute and solvent in paraffine oil (nonpolar).

(hydrogen bonding) (ion-dipole) (dispersion) (dipole-dipole)

#4 State the kind of intermolecular forces that would occur between the solute and solvent in magnesium bromide (ionic). Check all that apply.

(ion-dipole) (hydrogen bonding) (dipole-dipole) (dispersion)

Answer 1

#1

Barium nitrate is an ionic compound. Thus, Ion-dipole & dispersion intermolecular interactions are observed in Barium nitrate.

#2

Paraffine oil: it is a non-polar compound. Thus it will be dissolved in the non-polar solvents such as Hexane, Toluene, carbon tetrachloride

#3

Only dispersion intermolecular interaction occurs between the solute and solvent in the parraffine oil.

#4

Magnesium bromide is an ionic compound. Thus, Ion-dipole & dispersion intermolecular interactions are observed in Magnesium bromide.