1.) If you start with one mole of salicylic acid and transform all of it into...
1.) If you start with one mole of salicylic acid and transform all of it into aspirin, how many moles of aspirin will you obtain?
2.) Why can’t you just use the grams of aspirin produced and compare it to the grams of salicylic acid starting material in order to calculate the % yield?
3.) At what step of the experiment is the water-soluble acetic acid by-product separated from the aspirin product?
Homework Answers
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1.) If you start with one mole of salicylic acid and transform
all of it into...
10. Calculate the theoretical yield of aspirin using 4.00 g of salicylic acid as the starting...
10. Calculate the theoretical yield of aspirin using 4.00 g of salicylic acid as the starting material. Assume acetic anhydride is in excess. (Hint: from the mass of salicylic acid acid use, how many moles of salycilic acid are present intitially? What is the salycilic acid : acetylsalicylic acid molar ratio? How many moles of acetylsalicylic acid are formed assuming 100% yield? Based on this abount of moles, how many grams of acetylsalicylic acid are formed? (this is the theoretical...
If you use 12.22 g of salicylic acid and an excess of acetic anhydride in the...
If you use 12.22 g of salicylic acid and an excess of acetic anhydride in the synthesis of aspirin, what would be the theoretical yield of acetylsalicylic acid in moles? In grams? Determine the percent yield if 10.50g of aspirin is isolated
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...
Experiment 2: Synthesis of Aspirin (Acetylsalicylic Acid ) 1. How many moles of salicylic acid are...
Experiment 2: Synthesis of Aspirin (Acetylsalicylic Acid ) 1. How many moles of salicylic acid are there in 1.0 grams of salicylic acid? 2. How many moles of acetic anhydride are there in 3 mL of acetic anhydride? 3. When 1.0g of salicylic acid and 3 mL of acetic anhydride react, DETERMINE which one is the limiting reactant (you can go to General Chemistry if you need help about limiting reagent)? 4. What is phosphoric acid used for in the...
19. The over the counter analgesic aspirin is prepared from salicylic acid by a one step...
19. The over the counter analgesic aspirin is prepared from salicylic acid by a one step process as shown below. Would pure aspirin give a positive FeCl3 test? Justify your answer. OH OH -OH Salicylic acid Acetic anhydride Aspirin (acetylsalicylic acid) acetic acid 20. Caproic acid (molecular formula C.H20) is only slightly soluble in water but is readily soluble (with stirring or shaking) in both 0.6 M NaHCO, and 2.5 M NaOH. Conversely, formic acid is readily soluble in both...
95 Experiment IX Synthesis of Aspirin Prelaboratory Assignment Name: frobect Bun, Bak Baniot Date...
95 Experiment IX Synthesis of Aspirin Prelaboratory Assignment Name: frobect Bun, Bak Baniot Date Sabaitecd Section #. . Using chemical structures, write the balanced equation for the synthesis of aspirin and label all reagents and products with their appropriate names. ooH он C14 14,03 2. What are the two functional groups on salicylic acid? 3. What are the two functional groups on aspirin? b. anhydride? b) How many moles of Apririn could be produced from 2 moles of salicylic acid?...
use condensed structural formulas to write the balance equation for the reaction of salicylic acid with...
use condensed structural formulas to write the balance
equation for the reaction of salicylic acid with acetic
anhydride.
Use the models to demonstrate the reaction
use condensed structural formulas to write the balance
equation for the reaction of salicylic acid with methanol.
Use the models to demonstrate the reaction
Describe the appearance of aspirin product
REPORT SHEET: ASPIRIN Name Partner(s) Date Section Instructor A. Molecular models Use condensed Ne condensed structural formulas to write the balanced equation for the reaction...
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...
i am stuck on the last two parts of the table. cpuld you check my work and complete the questions? Part IlI Beer's Law Data for Salicylic Acid Standard Solutions Concentration Trial 2.180 | 2....
i
am stuck on the last two parts of the table. cpuld you check my
work and complete the questions?
Part IlI Beer's Law Data for Salicylic Acid Standard Solutions Concentration Trial 2.180 | 2.90x10.ฯ าเว 0.9866 Best-fit line equation for the salicylic acid standards 33640. Test of the Purity of the Synthesized Aspirin Initial mass of aspinin sample (g) Absorbance of aspirin sample Moles of salicylic acid in aspirin sample (mol) Mass of salicylic acid in aspirin sample (g)...
Instructions: Use the following reaction to answer the questions in part ad Tom aspirin acetic acid...
Instructions: Use the following reaction to answer the questions in part ad Tom aspirin acetic acid Salicylic P.M. - 138g/mol acetic anhydride P.M. -102.1g/mol PM180.2g/mol a. Calculate the theoretical yield if 6.0g of salicylic acid are reacted with 12mL of acetic anhydride (density 1.08g/ml) b. What is the limiting REAGENT and what is the excess REAGENT? c. How many moles of excess reagent did not react with the limiting reagent? d. f 6.9 g of aspirin are produced in an...
10. Calculate the theoretical yield of aspirin using 4.00 g of salicylic acid as the starting material. Assume acetic anhydride is in excess. (Hint: from the mass of salicylic acid acid use, how many moles of salycilic acid are present intitially? What is the salycilic acid : acetylsalicylic acid molar ratio? How many moles of acetylsalicylic acid are formed assuming 100% yield? Based on this abount of moles, how many grams of acetylsalicylic acid are formed? (this is the theoretical...
19. The over the counter analgesic aspirin is prepared from salicylic acid by a one step process as shown below. Would pure aspirin give a positive FeCl3 test? Justify your answer. OH OH -OH Salicylic acid Acetic anhydride Aspirin (acetylsalicylic acid) acetic acid 20. Caproic acid (molecular formula C.H20) is only slightly soluble in water but is readily soluble (with stirring or shaking) in both 0.6 M NaHCO, and 2.5 M NaOH. Conversely, formic acid is readily soluble in both...
95 Experiment IX Synthesis of Aspirin Prelaboratory Assignment Name: frobect Bun, Bak Baniot Date Sabaitecd Section #. . Using chemical structures, write the balanced equation for the synthesis of aspirin and label all reagents and products with their appropriate names. ooH он C14 14,03 2. What are the two functional groups on salicylic acid? 3. What are the two functional groups on aspirin? b. anhydride? b) How many moles of Apririn could be produced from 2 moles of salicylic acid?...
use condensed structural formulas to write the balance
equation for the reaction of salicylic acid with acetic
anhydride.
Use the models to demonstrate the reaction
use condensed structural formulas to write the balance
equation for the reaction of salicylic acid with methanol.
Use the models to demonstrate the reaction
Describe the appearance of aspirin product
REPORT SHEET: ASPIRIN Name Partner(s) Date Section Instructor A. Molecular models Use condensed Ne condensed structural formulas to write the balanced equation for the reaction...
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...
i
am stuck on the last two parts of the table. cpuld you check my
work and complete the questions?
Part IlI Beer's Law Data for Salicylic Acid Standard Solutions Concentration Trial 2.180 | 2.90x10.ฯ าเว 0.9866 Best-fit line equation for the salicylic acid standards 33640. Test of the Purity of the Synthesized Aspirin Initial mass of aspinin sample (g) Absorbance of aspirin sample Moles of salicylic acid in aspirin sample (mol) Mass of salicylic acid in aspirin sample (g)...
Instructions: Use the following reaction to answer the questions in part ad Tom aspirin acetic acid Salicylic P.M. - 138g/mol acetic anhydride P.M. -102.1g/mol PM180.2g/mol a. Calculate the theoretical yield if 6.0g of salicylic acid are reacted with 12mL of acetic anhydride (density 1.08g/ml) b. What is the limiting REAGENT and what is the excess REAGENT? c. How many moles of excess reagent did not react with the limiting reagent? d. f 6.9 g of aspirin are produced in an...
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