How many grams of active ingredient do you need kyo add to 200ml 5% solution to fortify it to 7%

Answer 1

To calculate the amount of active ingredient needed to fortify a solution, you need to use the formula:

(Initial solution volume x Initial solution concentration) + (Amount of active ingredient to be added x Active ingredient concentration) = (Final solution volume x Final solution concentration)

Let's calculate the amount of active ingredient needed to fortify a 200ml 5% solution to a 7% solution.

Let x be the amount of active ingredient to add (in grams).

(200ml x 0.05) + (x grams x 1) = (200ml + x ml) x 0.07

10 + x = 0.07(200 + x)

10 + x = 14 + 0.07x

0.93x = 4

x ≈ 4.301 g

Therefore, you would need to add approximately 4.301 grams of active ingredient to fortify a 200ml 5% solution to a 7% solution.