Pick an appropriate solvent from the table below to dissolve each substance. Sta
ID: 981179 • Letter: P
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.
#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)
Common polar solvents Common nonpolar solvents Water (H2O) Hexane (C6H14) Acetone (CH3COCH3) Diethyl ether (CH3CH2OCH2CH3) Methanol (CH3OH) Toluene (C7H8) Ethanol (CH3CH2OH) Carbon tetrachloride (CCl4)Explanation / Answer
1. Barium nitrate is an ionic compound (polar), so it woud prefer a polar solvent to dissolve. So approapriate solvents are water, methanol, and ethanol.
Intermolecular forces in barium nitrate are mainly dispersion and ion-dipole
2. Paraffin is a non-polar compound, so it can be dissolved by hexane, carbon tetrachloride, toluene, diethyl ether
3. Paraffin is a non-polar compound, so the only intermolecular force that exist between the solutes and the solvent in paraffin oil is dispersion forces
4. Magnesium bromide is an ionic compound so it can be dissolved by polar solvents like water, ethanol and methanol
Magnesium bromide is ionic, so the main intermolecular forces are dispersion, ion-dipole and dipole-dipole