Question

What is the percent strength of a solution containing 150g of active ingredient in a total of 1,000ml of solution?

a) 10%
b) 15%
c) 20%
d) 25%

Answer 1

The percent strength of a solution containing 150g of active ingredient in a total of 1000ml of solution is 15%, which corresponds to option b). The correct option is b.

Step-by-step explanation:

To calculate the percent strength of a solution, we can use the mass percentage, which is the mass of the active ingredient divided by the total mass of the solution, multiplied by 100. We know the solution contains 150g of active ingredient in a total of 1000ml of solution.

Assuming the density of the solution is approximately 1.0 g/mL (common for aqueous solutions), we can say that 1000ml of solution is roughly equivalent to 1000g of solution.

Now, applying the formula:

% strength = (mass of active ingredient / total mass of solution) × 100%

% strength = (150g / 1000g) × 100% = 15%

Therefore, the percent strength of the solution is 15%, which corresponds to option b). The correct option is b.