Pick an appropriate solvent from Table 12.3 in the textbook to dissolve each of

Question

Pick an appropriate solvent from Table 12.3 in the textbook to dissolve each of the following according to the general rule about mixing of two liquids.

Part A

motor oil (nonpolar)

Check all that apply.

Part B

ethanol (polar, contains an OH group)

Check all that apply.

Part C

lard (nonpolar)

Check all that apply.

Part D

potassium chloride (ionic)

Check all that apply.

Part E

State the kind of intermolecular forces that would occur between the solute and solvent in each case.

Essay answers are limited to about 500 words (3800 characters maximum, including spaces).

toluene methanol ethanol carbon tetrachloride acetone water hexane

Part B

ethanol (polar, contains an OH group)

Check all that apply.

carbon tetrachloride acetone hexane methanol toluene water

Part C

lard (nonpolar)

Check all that apply.

methanol toluene ethanol carbon tetrachloride acetone hexane water

Part D

potassium chloride (ionic)

Check all that apply.

toluene water acetone carbon tetrachloride methanol hexane ethanol

Part E

State the kind of intermolecular forces that would occur between the solute and solvent in each case.

Essay answers are limited to about 500 words (3800 characters maximum, including spaces).

Explanation / Answer

A)

for motor oil, which is nonpolar, choose only NONPOLAR solvents

those are:

toluene, carbon tetrachloride and hexane

B)

This is polar, due to OH, so choose polar solvents:

acetone, methanol, water

C)

For lard, nonpolar:

toluene, carbon tetrachloride and hexane

d)

For ionic, choose polar, so they will solvate

acetone, methanol, water, ethanol

e)

solute + solvent:

For:

a)

nonpolar + nonpolar = induced dipole, london dispersion forces

b)

H-bonds, dipole-dipole, dispersion forces

c)

nonpolar + nonpolar = induced dipole, london dispersion forces

d)

dipole + ion, dispersion forces

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