If a solution has 25 grams of dextrose in 500ml, what is the percentage strength of the solution?

Study for the Pharmacy Technician Certification Board Math Exam. Prepare with flashcards and multiple choice questions, each question includes hints and explanations. Excel in your exam!

To determine the percentage strength of a solution, you can use the formula for calculating percentage concentration, which is:

Percentage (%) = (Amount of solute in grams / Total volume of solution in milliliters) × 100

In this scenario, the amount of dextrose (the solute) is 25 grams and the total volume of the solution is 500 ml.

Plugging in the values:

Percentage (%) = (25 grams / 500 ml) × 100

Calculating this gives:

Percentage (%) = (0.05) × 100 = 5%

This means that 5% of the solution consists of dextrose, which is why this answer is the correct choice. The solution's strength reflects how much solute is present relative to the total volume, indicating a clear understanding of concentration in pharmacy practice.