Loading...

Messages

Proposals

Stuck in your homework and missing deadline? Get urgent help in $10/Page with 24 hours deadline

Get Urgent Writing Help In Your Essays, Assignments, Homeworks, Dissertation, Thesis Or Coursework & Achieve A+ Grades.

Privacy Guaranteed - 100% Plagiarism Free Writing - Free Turnitin Report - Professional And Experienced Writers - 24/7 Online Support

Limiting reagent lab the reaction between vinegar and baking soda

05/01/2021 Client: saad24vbs Deadline: 7 Days

Data & Analysis Sheet


Name: Matthew Woods


Part 1: Vinegar reacting with calcium carbonate in eggshells


1. Describe what you saw each time you stirred the mixtures, including final observations of each.


In Cup 1, I didn’t see much just a couple bubble here and there. In Cup 2, over time I saw the egg get bigger and feels rubbery and flexible with a lot more bubbles forming than Cup 1.


2. In words only, write the chemical reaction occurring when vinegar and the eggshell react. It’s similar to Equation #7 in the instructions (but just use words, not formulas). Here’s the beginning: “Calcium carbonate plus acetic acid react to yield….”


 Calcium Carbonate (CaCO3) and acetic acid (CH3COO) reacts in a double replacement reaction, giving you calcium acetate, water, and carbon dioxide. Since calcium acetate is soluble it'll dissolve. This leaves behind the egg's inner membrane, making it flexible and rubbery.


3. What gas is in the bubbles produced? carbon dioxide gas


4. In Cup 1, what is the limiting reactant and what evidence do you have to support your claim?


5. In Cup 2, what is the limiting reactant and what evidence do you have to support your claim?


Part 2: Experimental Data for Baking Soda and vinegar reacting


Data


Mass baking soda (alone)


5.0 g


Mass of beaker (alone)


15.9 g


Vinegar %


5%


Mass vinegar + beaker


59.6 g


Mass vinegar (alone)


43.7 g


Mass mixture + beaker after reaction


63.0 g


Mass mixture (only) after reaction


47.1 g


Part 2: Table for Calculation Results (Show work below this table and enter final results here)


Results


6. Molar mass of sodium bicarbonate


84.0 g/mol


7. Moles of sodium bicarbonate


8. Mass of acetic acid in vinegar


9. Molar mass of acetic acid


10. Moles of acetic acid


11. Total initial mass of reactants


12. Final mass of mixture


13. Difference in mass = initial mass – final mass = carbon dioxide produced (actual yield)


14. Limiting Reactant


15. Theoretical yield carbon


dioxide


16. % yield carbon dioxide


Be careful of sig fig in your measurements and calculations.


Calculations (Show all work by each question below and then enter the final results of each calculation into the table above.) Please make your answers stand out by bolding or coloring them.


6. Determine the molar mass of sodium bicarbonate.


Molar mass of NaHCO3 = 84.00661 g/mol


22.989770+1.00794+12.0107+15.9994*3


Sig figs = 84.0 g/mol


7. Calculate the number of moles of sodium bicarbonate using the mass of baking soda.


8. Determine the mass of acetic acid used in the experiment. You need to look on your bottle of vinegar to do this. If your vinegar is 4 %, this means that every 100 g of vinegar contains 4 g of acetic acid. (If it is 5 %, then 100 g contains 5 g of acetic acid). To calculate the mass of acetic acid, use the following equation. For 5 %, replace 0.04 with 0.050. Record results in table. You can assume the percent has 2 sig figs.


mass of acetic acid = mass of vinegar x 0.040


9. Determine the molar mass of acetic acid, HC2H3O2.


10. Determine the number of moles of acetic acid in each sample of vinegar. Hint: you need to use the mass of acetic acid, not the mass of vinegar.


11. Add the mass of baking soda and vinegar initially. This is the total initial mass of reactants.


12. Record the final mass of mixture.



13. Determine the total mass gain or loss for the reaction by comparing your initial mass to the final mass of mixture. This is the mass of carbon dioxide lost which is your actual loss.


14. Compare the moles of sodium bicarbonate to moles of acetic acid. Which one is the limiting reactant and why? Show calculations to support this but also describe what you saw that supports your statement.


15. Determine the number of grams of carbon dioxide that the reaction should theoretically produce. This is where the pen and paper stoichiometry comes in. In the calculation, use the limiting reactant as your "known" and the carbon dioxide as your unknown. You have already calculated the moles of sodium bicarbonate and acetic acid used so Step I in the “three steps process” used to go from grams known to grams unknown is already done. See the Ch. 8 Lecture about Steps II and III, remembering that one mole of acetic acid or sodium bicarbonate should produce one mole of carbon dioxide (from Eq #7).


16. Calculate the “percent yield” for the carbon dioxide produced. If the actual yield is a negative number, then the % yield would be 0.


Be careful of sig figs in your calculations. Make sure you showed work.


Questions


17. Look at the percent yield of carbon dioxide produced. Give a possible cause (experimental error, not calculation or measurement or instrumental error) for differences between what you calculated should be produced (theoretical yield) and what was actually produced. This should be something that you probably couldn’t avoid very well. (So don’t say, “I measured wrong” or “I calculated wrong” because this is easily avoidable by redoing the lab or re-measuring).


18. In the calculation for #15, why couldn’t the moles of the other reactant be used in the calculation?


19. True or False: After you figure out the moles of the reactants in a reaction, the lower amount of moles is always the limiting reactant. Please explain your answer thoroughly. Providing an example would be very helpful.


Keep going on the next page


Extension with calcium carbonate:


Suppose we did the quantitative experiment part 2 with calcium carbonate (found in egg shells and Tums) instead of baking soda. So we reacted it with vinegar and took mass measurements.


20. Write a balanced reaction for acetic acid reacting with calcium carbonate. Be careful. It is no longer a 1:1 ratio. Hint: you should’ve written this in words in #2 so now turn those words into correct formulas and balance. Include phases.


21. Suppose we got the following data from doing the lab with vinegar and calcium carbonate. Fill in the 2 missing boxes (with the green stars **) using the given data.


Data Table


Run #1


Mass calcium carbonate (alone)


3.9 g


Mass beaker


30.0 g


Vinegar percent


5%


Mass vinegar + beaker


84.2 g


Mass vinegar (alone)


**


Mass mixture + beaker after reaction


87.4 g


Mass mixture (only) after reaction


**


Calculations (Show all work by each question below the table and then enter the final results of each calculation into the following table)


Results (show work below)


Run #1


22. Molar mass of calcium carbonate


23. Moles of calcium carbonate


24. Mass of acetic acid in vinegar


25. Molar mass of acetic acid


26. Moles of acetic acid


27. Total initial mass


28. Final mass mixture (measured in lab – copy from above table)


29. Difference in mass = initial mass – final mass = carbon dioxide produced (actual yield)


30. Limiting Reactant


31. Theoretical yield carbon


dioxide


32. % yield carbon dioxide


22. Determine the molar mass of calcium carbonate (using a periodic table).


23. Calculate the number of moles of calcium carbonate using the data above.


24. Determine the mass of acetic acid used in the experiment. Assume vinegar is 5% on the bottle. (If it is 5 %, then 100 g contains 5 g of acetic acid). Record results in table below. You can assume the percent has 2 sig figs.


25. Determine the molar mass of acetic acid, HC2H3O2. No need to show work here if you did above. Just put it in the table.


26. Determine the number of moles of acetic acid in the sample of vinegar that was used. Hint: you need to use the mass of acetic acid, not the mass of vinegar.


27. Add the mass of calcium carbonate and vinegar initially. This is the total initial mass of mixture. Record results.



28. The final mass of the mixture is given in the table above. Just report this number below (no work to show).



29. Determine the total mass gain or loss for the reaction by comparing your initial mass to the final mass of mixture. This is the mass of carbon dioxide lost which is your actual loss.


30. To determine the number of grams of carbon dioxide that the reaction should theoretically be produced, we need to first determine the limiting reactant. This is where the pen and paper stoichiometry comes in. Compare the moles of calcium carbonate to acetic acid. Which one is the limiting reactant and why? ** Be very careful** This is not a 1:1 ratio like the first part of the lab.


31. Determine the theoretical yield of carbon dioxide. To do this, in the calculation, use the limiting reactant as your known and the carbon dioxide as your unknown. You have already calculated the moles of calcium carbonate and acetic acid used so Step I in the “three steps process” used to go from grams known to grams unknown is already done. See the Ch. 8 Lecture about Steps II and III, but remember that now we do not have a 1:1 ratio.


32. Calculate the “percent yield” for the carbon dioxide produced. If the actual yield is a negative number, then the % yield would be 0.


Extra Credit Questions:


a) In this particular example, the change in mass during the reaction provides evidence that a chemical reaction is taking place. Explain this.


b) Is it necessary to have a change in mass in order to have a chemical reaction? Why or why not?


c) Provide an example of a chemical reaction (not just a physical change) where no mass change would be observed.

Homework is Completed By:

Writer Writer Name Amount Client Comments & Rating
Instant Homework Helper

ONLINE

Instant Homework Helper

$36

She helped me in last minute in a very reasonable price. She is a lifesaver, I got A+ grade in my homework, I will surely hire her again for my next assignments, Thumbs Up!

Order & Get This Solution Within 3 Hours in $25/Page

Custom Original Solution And Get A+ Grades

  • 100% Plagiarism Free
  • Proper APA/MLA/Harvard Referencing
  • Delivery in 3 Hours After Placing Order
  • Free Turnitin Report
  • Unlimited Revisions
  • Privacy Guaranteed

Order & Get This Solution Within 6 Hours in $20/Page

Custom Original Solution And Get A+ Grades

  • 100% Plagiarism Free
  • Proper APA/MLA/Harvard Referencing
  • Delivery in 6 Hours After Placing Order
  • Free Turnitin Report
  • Unlimited Revisions
  • Privacy Guaranteed

Order & Get This Solution Within 12 Hours in $15/Page

Custom Original Solution And Get A+ Grades

  • 100% Plagiarism Free
  • Proper APA/MLA/Harvard Referencing
  • Delivery in 12 Hours After Placing Order
  • Free Turnitin Report
  • Unlimited Revisions
  • Privacy Guaranteed

6 writers have sent their proposals to do this homework:

University Coursework Help
Helping Hand
Writer Writer Name Offer Chat
University Coursework Help

ONLINE

University Coursework Help

Hi dear, I am ready to do your homework in a reasonable price.

$62 Chat With Writer
Helping Hand

ONLINE

Helping Hand

I am an Academic writer with 10 years of experience. As an Academic writer, my aim is to generate unique content without Plagiarism as per the client’s requirements.

$60 Chat With Writer

Let our expert academic writers to help you in achieving a+ grades in your homework, assignment, quiz or exam.

Similar Homework Questions

Yellow perch external anatomy - Am i facing north - Mass of jupiter in standard form - App-Biography Viewer - Further maths formula booklet - Clinical psychology trull prinstein 8th edition pdf - Holy cross high hamilton - Thoughts of the past - The upward slope of the supply curve reflects the - Photorec carver - All logic gates and truth table - Name the four most common gases in the atmosphere - Godin shephard leisure time physical activity questionnaire - Human Resources research paper: Work place stress and effects on employees - Leece neville alternator troubleshooting - Tu lo sai baritone - Essays guru only - Girl powdering her neck analysis - Dyadic therapy definition - Heat effects and calorimetry - Gym risk assessment pdf - Power at my place - Cus no3 cu2+ s no - Institution of civil engineers hong kong - What is jetblue's strategy for success in the marketplace - NETWORK SEC - Ato division 293 release authority form - North adelaide bin day - Bluebeam revu measure tool - Why was the contoso\administrator not able to open the file? - Seven mysteries of the kingdom of heaven - Gerd soap note - Calvary health care bethlehem graduate nurse program - Off peak electricity times momentum - New norcia olive oil - Effects of Drug Abuse - Half wave rectifier with capacitor - Electrons and the periodic table review answers - Papier plume the blues w harpoon flex nib - Amy's ice cream paper bag - Rosemount 1144 pressure transmitter manual - Ken is traveling for his business - LeaderAsChangeAgent_Assessment2 - Monash engineering design 2 - Building competitive advantage through functional level strategy - QNT561 Week 1 Statistics Concepts and Descriptive Measures - Once a week comprehension book 3 with answers edition - Australian top 50 songs - A binding price floor causes - David lester clayton utz - End behavior of the graph of polynomial function - Nsw ecumenical council churches - Northumbria university campus map - How to calculate case mix index for ms drg - How to calculate evsi from decision tree - A motorcycle catches a car mastering physics - Alistair macrae uniting church - Mental health nursing process recording example - The constant gardener scene - Need help with A&P Quiz - Oomph goo and stain remover ingredients - Dumb and dumber 2 age rating - Sold furniture for cash journal entry - Medical coding ashworth college - Purnell's cultural domain communication includes - Architecture as space bruno zevi pdf - Nca credo for ethical communication - How can nurses influence quality improvement activities - Cons of vegetarian diet - Lourdes llama a carla. carla ya ha salido. - Purpose of a bed stick - Enterprise Risk Management - Benchmark - Community Teaching Plan: Community Presentation - Non defensive communication techniques - #{91 =9876751387}{ Love marriage specialist baba ji in Faridabad - Coulomb's law experiment lab report conclusion - Prepare a pro forma income statement for the quarter - International relations & Zombies - Dell computer questions and answers - Human resource quizs - 4.5 Strategic Thinking Project - Which data type would be the best logical data type for a field named paiddate? - Parker polypak seal catalogue - Why did the donkey get a passport worksheet 60 - 99 cent outlet laurel ms - Means a lot to me - Catching fire how cooking made us human sparknotes - Assmnt - Destiny 2 nascent dawn 5 5 hive ritual disrupted - Percent of oxygen in potassium chlorate lab answers - U.S. Health Care Systems for Small Populations, Part 2 - Certificate iv in massage therapy practice - SCIENCE (No Plagairism, A++ Work, On Time) - Profilio - P v2 r calculator - Powder Point - The average cost of production is constant along an isoquant. - Essay precis writing and comprehension books - Kestrel communicator software download - Dexter company applies the direct write-off method in accounting for uncollectible accounts.