NAPLEX (North American Pharmacist Licensure Examination) Practice Exam

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Study for the NAPLEX exam with a comprehensive quiz featuring multiple-choice questions and in-depth explanations. Build your pharmacological knowledge and increase your chances of passing the pharmacist licensure examination!

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How is % w/v defined?

  1. x mL/100 mL

  2. x g/100 g

  3. x g/100 mL

  4. x mL/100 g

The correct answer is: x g/100 mL

The unit "w/v" stands for weight per volume and is used to express the concentration of a solute in a given solution. This means that the answer must have a weight unit (such as grams) in the numerator and a volume unit (such as milliliters) in the denominator. Option A and B have volume units in both the numerator and denominator, while option D has a volume unit in the numerator and a weight unit in the denominator, making them incorrect. Option C is the only one that correctly represents "x grams per 100 milliliters", hence it is the correct answer.