What is the equivalent concentration in percent when 2 grams of drug is in 100ml of solution?

To determine the equivalent concentration in percent of a solution, the formula to use is:

[

\text{Concentration (%)} = \left( \frac{\text{Mass of solute (g)}}{\text{Volume of solution (mL)}} \right) \times 100

]

In this scenario, you have 2 grams of the drug and 100 mL of solution. Plugging the values into the formula gives:

[

\text{Concentration (%)} = \left( \frac{2 , \text{g}}{100 , \text{mL}} \right) \times 100

]

Calculating this, you find:

[

\text{Concentration (%)} = \left( 0.02 \right) \times 100 = 2%

]

Thus, the equivalent concentration of the solution is 2%. This means that in every 100 mL of this solution, there are 2 grams of the drug, which directly corresponds to a 2% concentration. This representation of concentration is particularly useful in pharmacy, as it provides a clear and direct understanding of how much active ingredient is present in a given volume of