Place the compounds in the order they will elute from the column when separated using reverse-phase liquid chromatography (RPLC) with a C18 stationary phase and the mobile phase buffered at pH = 2. The neutral species of each compound is shown. nicotine, PK₂1 = 3.15, PK₂2-7.85 N CH3 acetophenone CH3 Elutes first OH salicylic acid pK₂ = 2.97 OH

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Q: Why does old aspirin smell like vinegar?

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Q: Write the chemical equation between acetic acid and sodium hydroxide.

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Q: Why is aspirin a carboxylic acid?

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