Lugol's solution contains which element?

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Study for the Pharmaceutics II Exam 2 Concepts Test with flashcards and multiple choice questions. Each question has hints and explanations. Prepare effectively for your exam!

Multiple Choice

Lugol's solution contains which element?

Explanation:
The key idea is that Lugol's solution is an iodine solution. It’s formed by dissolving elemental iodine (I2) in water with potassium iodide, which helps iodine dissolve by forming the triiodide species (I3−). The element you’re being asked about is iodine, not chlorine, iron, or hydrogen. The presence of iodine gives the solution its characteristic color and antiseptic properties, while iodide mainly aids dissolution.

The key idea is that Lugol's solution is an iodine solution. It’s formed by dissolving elemental iodine (I2) in water with potassium iodide, which helps iodine dissolve by forming the triiodide species (I3−). The element you’re being asked about is iodine, not chlorine, iron, or hydrogen. The presence of iodine gives the solution its characteristic color and antiseptic properties, while iodide mainly aids dissolution.

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