Certification of Pharmacy Technicians (ExCPT) Practice Exam

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What is the concentration percentage of a solution containing 134 g of sugar in 200 mL?

The correct answer is: 67%

To determine the concentration percentage of a solution, you can use the formula: \[ \text{Concentration (\%)} = \left( \frac{\text{mass of solute (g)}}{\text{volume of solution (mL)}} \right) \times 100 \] In this case, the mass of the sugar (solute) is 134 g, and the volume of the solution is 200 mL. Plugging these values into the formula gives: \[ \text{Concentration (\%)} = \left( \frac{134 \, \text{g}}{200 \, \text{mL}} \right) \times 100 = 67\% \] This means that the solution is composed of 67 grams of sugar per 100 mL of solution, leading to a concentration of 67%. This calculation confirms that option 67% is indeed the correct answer. Other percentage options do not accurately reflect the relationship between the mass of the sugar and the volume of the solution as calculated.