Preparation of Aspirin, Methyl Salicylate and Nylon Data & Report Sheet Part A P

Question

Preparation of Aspirin, Methyl Salicylate and Nylon Data & Report Sheet Part A Preparation of Aspirin 1. Weight of salicylic acid used 2. Weight of aspirin recovered 3. Calculate the moles of salicylic acid used: weight (g) (step 1 above] Moles molecular wei CHO) 1 4. Calculate the moles of aspirin formed weight (g) [step 2 abovel Moles molecular weight (C9Hso) moles aspirin formed [step 4] Percentage yield x 100 moles salicylic acid used [step 3] Questions 1. Write the equation for the preparation of aspirin from salicylic acid and acetic anhydride. ion a aspinin henm toalicylcacid t Ree an hodnide 1. Have you prepared pure aspirin? Do you expect any other material to be in your product? What impurities might be in your product after washing and filtering it? you will expe as in t acetic acid (fvom he anhyd ide you wil have to sepa mate

Explanation / Answer

Part A)

3. moles of salicylic acid = 1/138.121 = 7.24 mmol

4. moles of aspirin formed = 0.57/180.157 = 3.164 mmol

5. percent yield = 3.164 x 100/7.24 = 43.70%

Solutions

1. Reaction,

C7H6O3 + C4H6O3 ---> C9H8O4 + C2H4O2

2. Pure aspirin is formed.

Other expected impurities that may be present = unreacted salicylic acid, acetic acid

3. Aspirin tablets are not pure aspirin but it contains fillers and binders which are inert in nature.

4. Methyl salicylate is an ester and is sweet selling comopund.

5. Both methylsalicylate and aspirin are used as anit-inflamatory agents.

6. the two layers are not miscible and hence forms an interface in between. The reaction occurs at the interface of the two layers. When formed nylon is remove from the interface, more product is formed.

7. Nylon is used to manufacture dental products in medicine.

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

---