Question

Suppose an Aspirin™ tablet contains 7 grains of the active ingredient, acetylsalicylic acid (1 grain = 64.7989 mg). If your tablet had a mass of 516 mg, calculate the percent recovery if you isolated 386 mg of acetylsalicylic acid in this experiment.

Answer 1

85.105 is the percent recovery if you isolated 386 mg of acetylsalicylic acid in this experiment.

Step-by-step explanation:

Number of grains of acetylsalicylic acid = 7 grains

(1 grains = 64.7089 mg)

7 grains = 7 × 64.7089 mg = 453.5923 mg

Total mass of acetylsalicylic acid = 453.5923 mg

Total mass of tablet = M = 516 mg

Mass of acetylsalicylic acid recovered = 386 mg

The percent recovery of acetylsalicylic acid recovered:

`=\frac{\text{final mass of substance}}{\text{Initial mass of substance}}* 100`

`=(386 mg)/(453.5923 mg)* 100=85.10 \%`

85.105 is the percent recovery if you isolated 386 mg of acetylsalicylic acid in this experiment.