Multiple Choice
Which of the following compounds is expected to be the least soluble in H2O?
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6. Chemical Quantities & Aqueous Reactions
Solubility Rules
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Oil molecules are nonpolar. Which type of solvent is most effective for removing an oil stain?
A
A basic solvent such as sodium hydroxide solution
B
A polar solvent such as water
C
A nonpolar solvent such as hexane
D
An acidic solvent such as hydrochloric acid
Verified step by step guidance1
Understand the principle of 'like dissolves like,' which means that substances with similar polarity tend to dissolve in each other more effectively.
Recognize that oil molecules are nonpolar, so they will dissolve best in solvents that are also nonpolar.
Identify the polarity of the given solvents: sodium hydroxide solution and hydrochloric acid are polar and ionic, water is polar, and hexane is nonpolar.
Conclude that a nonpolar solvent such as hexane will be most effective at dissolving and removing an oil stain because it matches the nonpolar nature of oil molecules.
Therefore, the best choice for removing an oil stain is a nonpolar solvent like hexane, rather than polar or ionic solvents.
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