If 50ml of a solution contains 2 grams of amoxicillin, what is the percentage strength of the solution?

To determine the percentage strength of a solution, you need to calculate how much of the solute (in this case, amoxicillin) is present in a certain volume of the solution. The formula for percentage strength is:

[

\text{Percentage Strength} = \left( \frac{\text{mass of solute (g)}}{\text{volume of solution (mL)}} \right) \times 100

]

In this scenario, you have 2 grams of amoxicillin in a 50 mL solution.

First, plug the values into the formula:

[

\text{Percentage Strength} = \left( \frac{2 \text{ g}}{50 \text{ mL}} \right) \times 100

]

Calculating this gives:

[

\text{Percentage Strength} = \left( 0.04 \right) \times 100 = 4%

]

This shows that the percentage strength calculated is 4%, which correctly matches the calculation for the percentage of the solution. Therefore, the percentage strength of the amoxicillin solution is indeed 4%.