Retention factors for three solutes separated on a C8 non- polar stationary phas

Question

Retention factors for three solutes separated on a C8 non- polar stationary phase are shown in the table at the right. Eluant was a citrate buffer:methanol mixture adjusted to pH with NH3. Indicate the major species present at each pH by dragging an appropriate structure to each position in the table below. The acetophenone structure is already placed for you as an example. (A structure may appear in more than one position, and one or more structures may not be used.) pKa values for Salicylic Acid are 2.97 and 13.6, and for nicotine are 3.15 and 7.85.

Explanation / Answer

Retention factors for three solutes separated on a C8 non- polar stationary phas

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