Answer:
science!!!!
Step-by-step explanation:
The intermolecular forces that occur between solute and solvent molecules determine the solubility of a solute in a particular solvent. In CH3CH2OH, the dominant intermolecular force is hydrogen bonding, which occurs between the polar -OH groups of ethanol and the solute molecule. The strength of the intermolecular forces in the solute will determine its solubility in CH3CH2OH.
A) CH:OCH: This molecule has a polar carbonyl group, and it can participate in dipole-dipole interactions with CH3CH2OH. Thus, it can dissolve in CH3CH2OH to some extent.
B) H2O: Water molecules are highly polar, and they can form hydrogen bonds with ethanol molecules. However, water molecules are not soluble in CH3CH2OH to a significant extent because the hydrophobic methyl group on the ethanol molecule cannot interact with water.
C) CH.CH: This molecule is nonpolar and cannot participate in hydrogen bonding or dipole-dipole interactions with CH3CH2OH. Thus, it is the least soluble in CH3CH2OH.
D) CHOH: This molecule has a polar -OH group, and it can participate in hydrogen bonding with CH3CH2OH. Thus, it can dissolve in CH3CH2OH to some extent.
Therefore, option C, CH.CH, would be the least soluble in CH3CH2OH based on intermolecular forces.