Homework Answers
Mass of Salicylic acid is 138.121g
no of moles= given weight / molecular weight
given weight of Salicylic acid is 2.92 g
no of moles of Salicylic acid = 2.92/138.121 = 0.0211 moles
%Yield = (practical yield / theoretical yield)×100
so 2.92g Salicylic acid ie 0.0211 moles of Salicylic acid will give 0.0211 moles of acetyl Salicylic acid.
theoretical yield of acetyl Salicylic acid = no. of moles × molar mass = 0.0211×180.158= 3.80g
% of yield = (4.4÷3.8)×100= 115
note: first pure your compound then calculate the yield.
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how can i find number of moles and % of yield?
Name Name Lab Partner Locker/...
Exercise 7: The % Yield of Aspirin Name Date Read Exercise 7 in your lab manual....
Exercise 7: The % Yield of Aspirin Name Date Read Exercise 7 in your lab manual. Complete the Pre-lab Assignment. In this substitute lab exercise, you will watch a short video on preparing aspirin. The video is posted on the course Moodle page, and it provides the masses of the reactants and the product; you should be able to calculate the theoretical yield and the % yield from the data given by the video. Submit the completed assignment by March...
Name Lab Partner Lab Section Date Lab 9 DATA Part A: Synthesis of Aspirin Mass of...
Name Lab Partner Lab Section Date Lab 9 DATA Part A: Synthesis of Aspirin Mass of salicylic acid 1.047 g Mass of watch glass 37.3959 Mass of watch glass + dry product 38.1409 Calculated mass of dry product 0.7459 Melting range of product 136-140 Addition of FeCl, to salicylic acid Addition of FeCl, to product Theoretical yield of aspirin Show calculation: Percent yield of aspirin product Show calculation:
Exp. No. Experiment/Subject Date Name Lab Partner Lab Partner Locker/ Desk No. partL dura collection 1....
Exp. No. Experiment/Subject Date Name Lab Partner Lab Partner Locker/ Desk No. partL dura collection 1. ALUMINUM /hydrochloric acid Observaticas: bubol, state aggresively, darkare a molecular : AlCl₃ + H₂ blonic (. Nationic : 2A/₂ + 342 d. Spectatorions al PPPPPPPPUUUUUUU0000000000UUUUUUUUUUU I. Sillor nitrate / Potassium iodide observations: d-molecular b.ionic c. net ionic Ag+ I AQI d-spectatorions Nozik W sodium hydroxide (hydrochloric acid observations: a molecular b. lonic C. netcon LiOHH y to d. spectator lans. Nau ccccccccccccc Date THE...
Write down the specific reaction under study. Find the melting point and boiling point of each...
Write down the specific reaction under study. Find the melting point and boiling point of each reactant and product involved in the reaction (in Celsius °C). Use the “Handbook of chemistry and Physics” as a reference, you can find a copy of one in the school library, or you can just use the internet. Calculate the number of moles of salicylic acid. This is equal to the number of moles of acetyl salicylic acid. Determine the theoretical mass (grams) of...
Moles and Reactions Data Sheet Name: POPl Lab Partner: Lab Bench # Part I: Molar Mass...
Moles and Reactions Data Sheet Name: POPl Lab Partner: Lab Bench # Part I: Molar Mass Formula Molar Mass he Tron 3. how your calculations:
Fill in the table and answer the questions below Name Pre-lab Questions (10 Marks) 1. Fill...
Fill in the table and answer the questions below
Name Pre-lab Questions (10 Marks) 1. Fill the table below: Materials Acetic anhydride H:SO, Salicylic acid Amount 12mL 0.25 mL 3mL Measured Molecular weight (g/mol) Moles 2. Identify the limiting reagent in this reaction? 3. Calculate the theoretical mass yield of Aspirin product? Show your work for full credit. [4] 4. What is the literature melting point of Aspirin (acetyl salicylic acid)?
Chem 143 - Lab 46) CALCULATE THE THEORETICAL YIELD Grams of sodium carbonate used Moles of...
Chem 143 - Lab 46) CALCULATE THE THEORETICAL YIELD Grams of sodium carbonate used Moles of sodium carbonate used Grams of calcium chloride used Moles of calcium chloride used Moles of precipitate expected Theoretical yield of precipitate in grams Actual yield of precipitate in grams Percent yield 5.6 Show detailed work for percent yield. Page 4 of 4 Chem 143 - Lab Pre-lab Exercise Show the details of each calculation to get full credit 1. Magnesium oxide, a white powdery...
can you please help me with this !!! which ever you can is fine, please... thanks...
can you please help me with this !!!
which ever you can is fine, please... thanks !
Results/Data • Aspirin synthesis salicylic acid: 2.0 g Acetic anhydride: 2 mL d= 1.082g/ml sodium acetate: 0.4 g • Experimental yield of aspirin: 2.4 g REPORT DATE: NAME: LAB PARTNER: I PREPARATION OF METHYL SALICYLATE (OIL OF WINTERGREEN): Reaction Odor: Color after addition of FeCl solution: Control Odor: Color after addition of FeCl3 solution: Question Which functional group of salicylic acid forms a...
Chemistry 172 pre-lab questions 1. ch aspirin was made from a lab experiment. Preparation of Aspirin...
Chemistry 172 pre-lab questions 1. ch aspirin was made from a lab experiment. Preparation of Aspirin A student would like to determine how much aspirin was made from The following is the lab data: Mass of flask 73.86 g Mass of flask & salicylic acid 77.88 g Mass of salicylic acid 4.02 g Mass of watch glass + filter paper 34.63 Mass of watch glass, filter paper & aspirin 38.29 g a. How much aspirin was made? b. The mass...
I want to make sure if my Theorical yield of Aspiring and Percentage yield are correct...
I
want to make sure if my Theorical yield of Aspiring and Percentage
yield are correct with my results shown in the picture. Can you
show calculations plase? thank you in advance
NAME Experiment 31 Work Page DATE SECTION PART 1-PREPARATION OF ASPIRIN 45. 104 1A. Mass of 50-mL Erlenmeyer flask (g) 5.2 43.00.9 IB. Mass of flask and salicylic acid (g) S.4 140a Mass of salicylic acid (g) IC. .s ID. Mass of filter paper (g) 2.32 Mass of...
Exercise 7: The % Yield of Aspirin Name Date Read Exercise 7 in your lab manual. Complete the Pre-lab Assignment. In this substitute lab exercise, you will watch a short video on preparing aspirin. The video is posted on the course Moodle page, and it provides the masses of the reactants and the product; you should be able to calculate the theoretical yield and the % yield from the data given by the video. Submit the completed assignment by March...
Name Lab Partner Lab Section Date Lab 9 DATA Part A: Synthesis of Aspirin Mass of salicylic acid 1.047 g Mass of watch glass 37.3959 Mass of watch glass + dry product 38.1409 Calculated mass of dry product 0.7459 Melting range of product 136-140 Addition of FeCl, to salicylic acid Addition of FeCl, to product Theoretical yield of aspirin Show calculation: Percent yield of aspirin product Show calculation:
Exp. No. Experiment/Subject Date Name Lab Partner Lab Partner Locker/ Desk No. partL dura collection 1. ALUMINUM /hydrochloric acid Observaticas: bubol, state aggresively, darkare a molecular : AlCl₃ + H₂ blonic (. Nationic : 2A/₂ + 342 d. Spectatorions al PPPPPPPPUUUUUUU0000000000UUUUUUUUUUU I. Sillor nitrate / Potassium iodide observations: d-molecular b.ionic c. net ionic Ag+ I AQI d-spectatorions Nozik W sodium hydroxide (hydrochloric acid observations: a molecular b. lonic C. netcon LiOHH y to d. spectator lans. Nau ccccccccccccc Date THE...
Moles and Reactions Data Sheet Name: POPl Lab Partner: Lab Bench # Part I: Molar Mass Formula Molar Mass he Tron 3. how your calculations:
Fill in the table and answer the questions below
Name Pre-lab Questions (10 Marks) 1. Fill the table below: Materials Acetic anhydride H:SO, Salicylic acid Amount 12mL 0.25 mL 3mL Measured Molecular weight (g/mol) Moles 2. Identify the limiting reagent in this reaction? 3. Calculate the theoretical mass yield of Aspirin product? Show your work for full credit. [4] 4. What is the literature melting point of Aspirin (acetyl salicylic acid)?
Chem 143 - Lab 46) CALCULATE THE THEORETICAL YIELD Grams of sodium carbonate used Moles of sodium carbonate used Grams of calcium chloride used Moles of calcium chloride used Moles of precipitate expected Theoretical yield of precipitate in grams Actual yield of precipitate in grams Percent yield 5.6 Show detailed work for percent yield. Page 4 of 4 Chem 143 - Lab Pre-lab Exercise Show the details of each calculation to get full credit 1. Magnesium oxide, a white powdery...
can you please help me with this !!!
which ever you can is fine, please... thanks !
Results/Data • Aspirin synthesis salicylic acid: 2.0 g Acetic anhydride: 2 mL d= 1.082g/ml sodium acetate: 0.4 g • Experimental yield of aspirin: 2.4 g REPORT DATE: NAME: LAB PARTNER: I PREPARATION OF METHYL SALICYLATE (OIL OF WINTERGREEN): Reaction Odor: Color after addition of FeCl solution: Control Odor: Color after addition of FeCl3 solution: Question Which functional group of salicylic acid forms a...
Chemistry 172 pre-lab questions 1. ch aspirin was made from a lab experiment. Preparation of Aspirin A student would like to determine how much aspirin was made from The following is the lab data: Mass of flask 73.86 g Mass of flask & salicylic acid 77.88 g Mass of salicylic acid 4.02 g Mass of watch glass + filter paper 34.63 Mass of watch glass, filter paper & aspirin 38.29 g a. How much aspirin was made? b. The mass...
I
want to make sure if my Theorical yield of Aspiring and Percentage
yield are correct with my results shown in the picture. Can you
show calculations plase? thank you in advance
NAME Experiment 31 Work Page DATE SECTION PART 1-PREPARATION OF ASPIRIN 45. 104 1A. Mass of 50-mL Erlenmeyer flask (g) 5.2 43.00.9 IB. Mass of flask and salicylic acid (g) S.4 140a Mass of salicylic acid (g) IC. .s ID. Mass of filter paper (g) 2.32 Mass of...
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