Recall: The theory of like dissolves like states that compounds with similar intermolecular forces or polarity dissolve each other. The types of intermolecular forces possible are:
– Ion-dipole interaction: the strongest type; occurs between ions from ionic compounds and dipole moments from polar covalent compounds.
– Hydrogen bonding: occurs when H is bonded to an electronegative atom such as N, O, F.
– Dipole-dipole interaction: occurs between polar covalent compounds.
– London dispersion forces: the weakest type; occurs between nonpolar covalent compounds.
Suggest an explanation for the observations that ethanol, C2H5OH, is completely miscible with water and that ethanethiol, C2H5SH, is soluble only to the extent of 1.5 g per 100 mL of water.
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