NAPLEX (North American Pharmacist Licensure Examination) Practice Exam

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How is an emulsifier chosen for creating an emulsion?

  1. According to its melting point

  2. Based on its color

  3. According to HLB balance

  4. Based on its density

The correct answer is: According to HLB balance

An emulsifier is chosen for creating an emulsion based on its HLB (hydrophilic-lipophilic balance) value. The HLB value of an emulsifier determines its ability to stabilize and maintain the emulsion by interacting with both the oil and water phases. It helps in determining how well the emulsifier will function in a specific system. Therefore, the correct choice is C. Options A, B, and D are not relevant factors when choosing an emulsifier. Melting point, color, and density do not play a significant role in determining the suitability of an emulsifier for creating an emulsion.

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