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DQuestion 3 2 pts In lab, you add 2.07 g salicylic acid to a 125 mL...
i did the synthesis of aspirin experiment and got the data below. how do you do...
i did the synthesis of aspirin experiment and got the data
below. how do you do the theoretical yield? percent yield of the
pure aspirin?
DATA: Mass of Salicylic Acid: 2.034g Volume of Acetic Anhydride used in synthesis: 4.00ml Mass of filter paper: 0.196g Mass of filter paper plus Aspirin: 1.868g Mass of Aspirin: 1.672g Percent Yield of Pure Aspirin: I Experimental Procedure HAZARD: Sulfuric acid, acetic anhydride and glacial acetic acid are corrosive to the skin. They are also...
Place 3.0 g of salicylic acid in a 125-ml Erlenmeyer flask. Carefully add, stirring constantly, 6...
Place 3.0 g of salicylic acid in a 125-ml Erlenmeyer flask. Carefully add, stirring constantly, 6 mL of acetic anhydride, followed by 10 drops of concentrated sulfuric acid. Swirl the contents of the flask so that the reactants are thoroughly mixed. Stopper the flask with a one- hole cork fitted with an inverted Pasteur pipet to prevent condensation of water in the reaction flask during heating on the steam bath. Heat the flask in a boiling-water or steam bath for...
used. Experimental . Place 2.0 g of salicylic acid in a 125-mL conical flask. 2. Add...
used. Experimental . Place 2.0 g of salicylic acid in a 125-mL conical flask. 2. Add 4.0 ml (d = 1.08 g/mL; 4.3 g) of acetic anhydride and 6-8 drops of 85% phosphoric acid. 3. Swirl the flask to mix all reagents, and place it in a 70°C water bath. Heat for about 10 minutes. 4. Remove the flask from the water bath and add 2 mL of cold water drop- wise, swirling the flask after each addition, 5. Add...
for this experiment of syntheis of aspirin, was the product obtained pure (based on color)? how...
for this experiment of syntheis of aspirin, was the product
obtained pure (based on color)? how do you know? the color was
white
Experimental Procedure HAZARD: Sulfuric acid, acetic anhydride and glacial acetic acid are corrosive to the skin. They are also irritants, and all operations in which these substances are used should be carried out under the hood. Prepare a hot-water bath by heating a 400-ml beaker containing about 200 mL of water. 1. Use a centigram balance and...
Preparation of salicylic acid: Place 2g of salicylic acid into dry conical flask. Add 5 mL...
Preparation of salicylic acid: Place 2g of salicylic acid into dry conical flask. Add 5 mL acetic anhydride and 5 drops of 85% phosphoric acid. Swirl the mixture and heat on a steam bath for 5 minutes. Remove flask form the steam bath and whilst still hot add 2 mL of water in one portion to decompose excess acetic anhydride. Why add the reaction mixture while it is still hot? Preparation of salicylic acid: Place 2g of salicylic acid into...
Aspirin can be synthesized in the lab by combining salicylic acid (C7H6O3) and acetic anhydride (C4H6O3)...
Aspirin can be synthesized in the lab by combining salicylic acid (C7H6O3) and acetic anhydride (C4H6O3) to form aspirin (C9H8O4) and acetic acid (C2H4O2).C2H4O2). The balanced equation for this reaction is C7H6O3+C4H6O3⟶C9H8O4+C2H4O2 A student started with 4.00 mL acetic anhydride (density=1.08 g/mL) and 2.07 g salicylic acid. The student synthesized 2.00 g of aspirin. Select the limiting reactant. acetic acid (C2H4O2) salicylic acid (C7H6O3) aspirin (C9H8O4) acetic anhydride (C4H6O3) Calculate the theoretical yield of aspirin (C9H8O4). theoretical yield: Calculate the...
Pre-lab Questions: Importance A one-step preparation of aspirin from its precursor, salicylic acid, via an ester...
Pre-lab Questions:
Importance A one-step preparation of aspirin from its precursor, salicylic acid, via an ester formation illustrates one of synthetic organic chemistry's most important uses, making the drugs that treat all types of illnesses. OH HOOH Background Aspirin is a prodrug of salicylic acid, the actual active drug. A compound related to salicylic acid, salicin, was first isolated from willow bark in the mid 1700's, but willow-bark extract was used by the ancient Greeks as a treatment for pain...
QUESTION 3 Salicylic acid reacts with acetic anhydride to form aspirin and acetic acid as shown. Use the equation to answer Questions 3 – 6. (salicylic acid) ...
QUESTION 3 Salicylic acid reacts with acetic anhydride to form aspirin and acetic acid as shown. Use the equation to answer Questions 3 – 6. (salicylic acid) (aspirin) C7H6O3 (s) + C4H6O3 (l) → C9H8O4 (s) + CH3COOH (l) MM = 138 MM = 180 If we divide 180 by 138 we find that 1.00 g salicylic acid will produce a maximum of 1.30 g aspirin. 3. A student starts with 3.20 g salicylic acid. What is the maximum amount...
PLEASE ANSWER #10 AND PLEASE SHOW WORK. (MY RECORDINGS OF THE MEASURMENTS ARE GIVEN IN BOLD...
PLEASE ANSWER #10 AND PLEASE SHOW WORK. (MY RECORDINGS OF THE MEASURMENTS ARE GIVEN IN BOLD ) Preparation of aspirin (lab) CHEMISTRY 1. Obtain about 3 g of salicylic acid and place it into a 125mL erlenmeyer flask. Record the mass of the salicylic acid. mass= 3.0184 g 2. in the fume hood transfer 6mL of acetic anhydride to your flask and then add 5 drops of concentrated sulfuric acid. Thoroughly mix the reagents by swirling the flask. 3. Place...
Mass 125 ml flask: 92.705g Mass 125 ml flask + salicylic acid: 95.706g Mass of salicylic acid used: 3.001g Mass of weigh...
Mass 125 ml flask: 92.705g Mass 125 ml flask + salicylic acid: 95.706g Mass of salicylic acid used: 3.001g Mass of weighing boat + filter paper: 5.228g Mass weighing boat + filter paper + crystals (air dried): 7.574g Mass of dry crystals (aspirin/ASA): 2.346g Questions: 1. Find moles of salicylic acid. 2. Find theoretical mass of acetyl salicylic acid. 3. Find percent yield of reaction.
i did the synthesis of aspirin experiment and got the data
below. how do you do the theoretical yield? percent yield of the
pure aspirin?
DATA: Mass of Salicylic Acid: 2.034g Volume of Acetic Anhydride used in synthesis: 4.00ml Mass of filter paper: 0.196g Mass of filter paper plus Aspirin: 1.868g Mass of Aspirin: 1.672g Percent Yield of Pure Aspirin: I Experimental Procedure HAZARD: Sulfuric acid, acetic anhydride and glacial acetic acid are corrosive to the skin. They are also...
Place 3.0 g of salicylic acid in a 125-ml Erlenmeyer flask. Carefully add, stirring constantly, 6 mL of acetic anhydride, followed by 10 drops of concentrated sulfuric acid. Swirl the contents of the flask so that the reactants are thoroughly mixed. Stopper the flask with a one- hole cork fitted with an inverted Pasteur pipet to prevent condensation of water in the reaction flask during heating on the steam bath. Heat the flask in a boiling-water or steam bath for...
used. Experimental . Place 2.0 g of salicylic acid in a 125-mL conical flask. 2. Add 4.0 ml (d = 1.08 g/mL; 4.3 g) of acetic anhydride and 6-8 drops of 85% phosphoric acid. 3. Swirl the flask to mix all reagents, and place it in a 70°C water bath. Heat for about 10 minutes. 4. Remove the flask from the water bath and add 2 mL of cold water drop- wise, swirling the flask after each addition, 5. Add...
for this experiment of syntheis of aspirin, was the product
obtained pure (based on color)? how do you know? the color was
white
Experimental Procedure HAZARD: Sulfuric acid, acetic anhydride and glacial acetic acid are corrosive to the skin. They are also irritants, and all operations in which these substances are used should be carried out under the hood. Prepare a hot-water bath by heating a 400-ml beaker containing about 200 mL of water. 1. Use a centigram balance and...
Pre-lab Questions:
Importance A one-step preparation of aspirin from its precursor, salicylic acid, via an ester formation illustrates one of synthetic organic chemistry's most important uses, making the drugs that treat all types of illnesses. OH HOOH Background Aspirin is a prodrug of salicylic acid, the actual active drug. A compound related to salicylic acid, salicin, was first isolated from willow bark in the mid 1700's, but willow-bark extract was used by the ancient Greeks as a treatment for pain...
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