How do you calculate moles of salicylic acid in aspirin sample?
4. Answers will vary. For the sample data, the mass of synthesized aspirin is 1.96 g. Corrected for purity, is: (1.96 × 0.75) = 1.47 g.
Part III Test of the Purity of the Synthesized Aspirin.
|Initial mass of aspirin sample (g)||0.200|
|Moles of salicylic acid in aspirin sample (mol)||1.77 × 10–4|
How do you calculate moles of aspirin?
Calculate the moles of substance by dividing the mass of substance in grams by the molecular weight in amu. In this case, the aspirin tablet contains 250 mg, or 0.250 g. Therefore, 0.250 g ÷ 180.17 amu = 0.00139 moles of aspirin.
Why is salicylic acid the limiting reagent in aspirin?
The limiting reagent is the compound which is less than the stoichiometric amount required. Since the stoichiometry for salicylic acid and acetic anhydride is 1:1, acetic anhydride is in excess and salicylic acid is the limiting reagent. 3.
How many moles are in salicylic acid?
The molar mass of salicylic acid (SA) is 138.12 g/mol.
How do you find the theoretical yield of salicylic acid?
Example: Start with 0.027moles of aspirin (limiting reagent) going to 0.027moles of salicylic acid. 3. Divide the number of grams of product obtained experimentally, by the number of grams obtained in the theoretical yield calculations and multiply by 100 to calculate the percent yield.
Is salicylic acid from aspirin?
This unique drug belongs to a family of compounds called the salicylates, the simplest of which is salicylic acid, the principal metabolite of aspirin. Salicylic acid is responsible for the anti-inflammatory action of aspirin, and may cause the reduced risk of colorectal cancer observed in those who take aspirin.