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PTECH Pharmaceutics-I (General, Physical and Dispensing) QUESTION #2952
Question 1
A prescription requires $250\text{ mg}$ of a drug, but the pharmacy only has a $5\%$ (w/v) solution. How many milliliters are needed?
  • 2 ml
  • 5 ml✔️
  • 10 ml
  • 50 ml
Correct Answer Explanation
$5\%$ w/v means $5\text{ g}$ in $100\text{ ml}$, or $50\text{ mg/ml}$. Calculation: $250\text{ mg} \div 50\text{ mg/ml} = 5\text{ ml}$.