## Step-by-Step Solution ### 1. **Analyze the Structure of Naphthalene** - Naphthalene consists of two fused benzene rings. - It is a nonpolar, aromatic hydrocarbon. ### 2. **"Like Dissolves Like" Principle** - Polar solvents dissolve polar compounds. - Nonpolar solvents dissolve nonpolar compounds. ### 3 **Review the Solvents Provided** | Solvent | Polarity | Likely to Dissolve Naphthalene? | Reasoning | |----------------|--------------|----------------------------------|-------------------------------------------------| | Water | Polar | No | Water dissolves polar and ionic compounds. | | 5% NaOH | Polar/Basic | No | Dissolves acidic or polar compounds. | | Diethyl ether | Nonpolar | **Yes** | Nonpolar, can dissolve nonpolar organics. | | 5% HCl | Polar/Acidic | No | Dissolves polar/ionic compounds. | ### 4. **Final Answer** **Diethyl ether** is the best solvent for dissolving naphthalene, because both are nonpolar. --- ## **Final Answer** > **Diethyl ether** can dissolve naphthalene based on its structure. --- **Explanation:** Naphthalene is nonpolar, so it dissolves well in nonpolar solvents like diethyl ether, but not in water, NaOH, or HCl.