Homework Answers
first option is correct answer...mole of aspirin will be eaual
to salicylic acid...first dedice mole of aspirin..same moles will
be of salicylic acid
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QUESTION 1 Aspirin (10.0 g) was saponified with NaOH. After workup, 8.5 g crude 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) ...
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...
QUESTION 2 Calculate the percent yield of aspirin if 2.50 g salicylic acid reacted with enough...
QUESTION 2 Calculate the percent yield of aspirin if 2.50 g salicylic acid reacted with enough acetic anhydride and 126 g of product were recovered. Show work! TT T Arial 3 (12pt) T .15. 25
QUESTION 3 What is the theoretical yield of aspirin if 3.00 g of salicylic acid reacted...
QUESTION 3 What is the theoretical yield of aspirin if 3.00 g of salicylic acid reacted with enough acetic anhydride? O 3.009 O 3.91 g 2.50 g 3.30 g
1. Mass of salicylic acid (g) 2.0089 5.10ml & 2. Volume of acetic anhydride (mL) Limiting...
1. Mass of salicylic acid (g) 2.0089 5.10ml & 2. Volume of acetic anhydride (mL) Limiting reactant is (circle one): Salicylic Acid or Acetic Anhydride Calculation for Limiting Reactant: 3. Theoretical yield of aspirin (9) Calculation for Theoretical Yield of aspirin: 4. Mass of filter paper 0.3369 N 5. Mass of filter paper + aspirin 2.471g 6. Experimental Yield of aspirin (g) 7. Percent Yield Synthesis of Aspirin An early oral pain reliever, salicylic acid, was determined to cause stomach...
During the aspirin synthesis a student began with 4.057 grams of salicylic acid (density=1.443 g/mL, mol.wt....
During the aspirin synthesis a student began with 4.057 grams of salicylic acid (density=1.443 g/mL, mol.wt. = 138. 12 g/mol) and 1.98 mL of acetic anhydride (d= 1.082 g/mL, Mwt= 102.09 g/mol). A total of 3.249 grams of aspirin was formed (m.wt 180.17 g/mol). What was the percent yield? 61.4 % 071.4% 80.1 % O 85.9 % Question 19 (3 points) In the oxidation of 9-Fluorenol to 9-Fluorenone, NaOCI serves as a: Nucleophile Drying agent Catalyst Reducing agent
CHROMIC ACID OXIDATION Pre Lab Questions the amounts of materials that will be used from the...
CHROMIC ACID OXIDATION Pre Lab Questions the amounts of materials that will be used from the experimental section above) H2SO4 + Na2Cr207 2H20- H2O, A Molecular Weight Theoretical yield amount moles on (if applicable) Equivalents 2. Look up the melting point for p-nitrobenzoic acid and record the reference. 3. What color change is expected to be observed in the reaction? Explain why. CHROMIC ACID OXIDATION Experimental Procedure: Part I: Synthesis of p-nitrobenzoic Acid 1. Under the hood, add 0.400 g...
4.3 Percent Yield 5. Aspirin is produced by the reaction of salicylic acid (AM=138.1 g/mol) and...
4.3 Percent Yield 5. Aspirin is produced by the reaction of salicylic acid (AM=138.1 g/mol) and acetic anhydride (M-102.1 g/mol). CH O(E) CoHO(s) +C2HO2(e) C H&O3(s) If 5.00 g of CsHO (M 180.2 g/mol) is produced from the reaction of 5.00 g CaHeO, and 6.00 g CaH&O, what is the percent yield? a) 11.6% 68.8% c) 59.9% b) 29.0% e) 76.68% 4.6 Chemical Equations and Chemical Analysis 6. A mixture of MnSOs and MnSO4 4H2O has a mass of 2.005...
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...
just need answer, which letter. TAL 1. (20pts) A student reacted 4.0 g of 2-hydroxybenzoic acid...
just need answer, which letter.
TAL 1. (20pts) A student reacted 4.0 g of 2-hydroxybenzoic acid (C H6O3, MW 138 g/mol) with 4.0 mL of acetic anhydride (CH603, MW 102 g/mol) and 1 g of concentrated sulfuric acid.(MW 98) After workup, the student isolated 2.5 g of aspirin (MW 180). The density of acetic anhydride is 1.08 g/mL. (atomic weights: C. 12, H 1; 0, 16, S. 32) 1a. The limiting reagent is a) 2-hydroxybenzoic acid b) acetic anhydride c)...
Question#1: Aspirin is prepared by reaction of salicylic acid (C7H6O3)(C7H6O3) with acetic anhydride (C4H6O3)(C4H6O3) according to...
Question#1: Aspirin is prepared by reaction of salicylic acid (C7H6O3)(C7H6O3) with acetic anhydride (C4H6O3)(C4H6O3) according to the following equation: C7H6O3Salicylicacid+C4H6O3Aceticanhydride→C7H6O3Salicylicacid+C4H6O3Aceticanhydride→ C9H8O4Aspirin+CH3COOHAceticacid A) How many grams of acetic anhydride are needed to react with 7.50 gg of salicylic acid? B)How many grams of aspirin will result? C) How many grams of acetic acid are formed as a by-product? Question #2: Aluminum reacts with chlorine gas to form aluminum chloride via the following reaction: 2Al(s)+3Cl2(g)→2AlCl3(s)2Al(s)+3Cl2(g)→2AlCl3(s) You are given 26.0 gg of aluminum...
QUESTION 2 Calculate the percent yield of aspirin if 2.50 g salicylic acid reacted with enough acetic anhydride and 126 g of product were recovered. Show work! TT T Arial 3 (12pt) T .15. 25
QUESTION 3 What is the theoretical yield of aspirin if 3.00 g of salicylic acid reacted with enough acetic anhydride? O 3.009 O 3.91 g 2.50 g 3.30 g
1. Mass of salicylic acid (g) 2.0089 5.10ml & 2. Volume of acetic anhydride (mL) Limiting reactant is (circle one): Salicylic Acid or Acetic Anhydride Calculation for Limiting Reactant: 3. Theoretical yield of aspirin (9) Calculation for Theoretical Yield of aspirin: 4. Mass of filter paper 0.3369 N 5. Mass of filter paper + aspirin 2.471g 6. Experimental Yield of aspirin (g) 7. Percent Yield Synthesis of Aspirin An early oral pain reliever, salicylic acid, was determined to cause stomach...
During the aspirin synthesis a student began with 4.057 grams of salicylic acid (density=1.443 g/mL, mol.wt. = 138. 12 g/mol) and 1.98 mL of acetic anhydride (d= 1.082 g/mL, Mwt= 102.09 g/mol). A total of 3.249 grams of aspirin was formed (m.wt 180.17 g/mol). What was the percent yield? 61.4 % 071.4% 80.1 % O 85.9 % Question 19 (3 points) In the oxidation of 9-Fluorenol to 9-Fluorenone, NaOCI serves as a: Nucleophile Drying agent Catalyst Reducing agent
CHROMIC ACID OXIDATION Pre Lab Questions the amounts of materials that will be used from the experimental section above) H2SO4 + Na2Cr207 2H20- H2O, A Molecular Weight Theoretical yield amount moles on (if applicable) Equivalents 2. Look up the melting point for p-nitrobenzoic acid and record the reference. 3. What color change is expected to be observed in the reaction? Explain why. CHROMIC ACID OXIDATION Experimental Procedure: Part I: Synthesis of p-nitrobenzoic Acid 1. Under the hood, add 0.400 g...
4.3 Percent Yield 5. Aspirin is produced by the reaction of salicylic acid (AM=138.1 g/mol) and acetic anhydride (M-102.1 g/mol). CH O(E) CoHO(s) +C2HO2(e) C H&O3(s) If 5.00 g of CsHO (M 180.2 g/mol) is produced from the reaction of 5.00 g CaHeO, and 6.00 g CaH&O, what is the percent yield? a) 11.6% 68.8% c) 59.9% b) 29.0% e) 76.68% 4.6 Chemical Equations and Chemical Analysis 6. A mixture of MnSOs and MnSO4 4H2O has a mass of 2.005...
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...
just need answer, which letter.
TAL 1. (20pts) A student reacted 4.0 g of 2-hydroxybenzoic acid (C H6O3, MW 138 g/mol) with 4.0 mL of acetic anhydride (CH603, MW 102 g/mol) and 1 g of concentrated sulfuric acid.(MW 98) After workup, the student isolated 2.5 g of aspirin (MW 180). The density of acetic anhydride is 1.08 g/mL. (atomic weights: C. 12, H 1; 0, 16, S. 32) 1a. The limiting reagent is a) 2-hydroxybenzoic acid b) acetic anhydride c)...
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