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

Baking soda and vinegar limiting reactant lab

25/10/2021 Client: muhammad11 Deadline: 2 Day

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:

Math Specialist
Innovative Writer
Isabella K.
Assignments Hut
Finance Master
Pro Writer
Writer Writer Name Offer Chat
Math Specialist

ONLINE

Math Specialist

I have worked on wide variety of research papers including; Analytical research paper, Argumentative research paper, Interpretative research, experimental research etc.

$34 Chat With Writer
Innovative Writer

ONLINE

Innovative Writer

I have read your project details and I can provide you QUALITY WORK within your given timeline and budget.

$48 Chat With Writer
Isabella K.

ONLINE

Isabella K.

I have written research reports, assignments, thesis, research proposals, and dissertations for different level students and on different subjects.

$41 Chat With Writer
Assignments Hut

ONLINE

Assignments Hut

I am a professional and experienced writer and I have written research reports, proposals, essays, thesis and dissertations on a variety of topics.

$46 Chat With Writer
Finance Master

ONLINE

Finance Master

I have read your project description carefully and you will get plagiarism free writing according to your requirements. Thank You

$21 Chat With Writer
Pro Writer

ONLINE

Pro Writer

After reading your project details, I feel myself as the best option for you to fulfill this project with 100 percent perfection.

$37 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

How to do harmonics on violin - Bbva compass marketing resource allocation case study analysis - Fluid Balance Discussion - First mcdonald's in italy - Operating system assignment - Samsung hails graphene ball battery success - William wordsworth anecdote for fathers summary - Canadian solar panels made in china - Baguley hall school holidays - Cause and effect of voting rights act - Cambridge latin course book 1 stage 6 felix translation - Daulia ltd v four millbank nominees ltd - What are the national patient safety goals 2018 - Mother's inheritance abu khalid analysis - Runswick bay kayak fishing - Ulster hospital visiting times - Thought process in mental status exam - Haystack in the floods summary sparknotes - Plato's allegory of the cave painting - 600 to 700 words - After the success of the company's first two months - I daniel blake graffiti - Template for literature review - Monash university library database - Case study - Explanatory and response variables - First computer inventor name - Civic responsibility lesson plan - Palo alto ad group mapping - Elephant and piggie we are in a book - Fantastic mr fox badger - Cisco ise wlc posture redirect acl - Case study using R - Thread 1 & 2 (160 words each) - 2.00 a day chapter summaries - The horses ted hughes theme - Cotton cushion hs code - Advertising appeals and execution styles ppt - In proof testing of circuit boards the probability - College land lease mildura fees - On truth and lie in an extra moral sense summary - How to write a windshield survey paper - Introduction of bookkeeping and accountancy - A company's stated core values and ethical principles are - W2 - Integrated financial model Excel - Interactive whiteboard games australia - Tomorrow 1 - Week 1 Discussion - Cardiff metropolitan university moodle - World war i test - DIT discussion3 - The news apply to the product desgin process and development tradeoff - Chi omega crime scene - Kingdom phylum class order family genus species - Cnn student news host - Ingliston equestrian centre christmas - Jim arthaud net worth - What is the decimal of 5 9 - Family therapy - Asqa change of ownership - What does kiana mean in hawaiian - Persuasive speech outline monroe's motivated sequence - School catchment area peterborough - Does leslie stahl wear a wig - Phillips bicycle charlie burg lyrics - What is a keyphasor - Access Control - Telstra mobile byo plan $29 - Rigid chain vise parts - Kelly pitney comprehensive problem 1 - Strayer university millersville md - Paper on Organization plan - Discussion - HW - Electoral college simulation exercise worksheet - Traditional approaches to project management concentrate firmly on - How to write a siop lesson plan - Project proposal - Co active coaching certification program - What does the thermal resistance of a medium represent - Business discussion - Supply Chain management - Small Business Management Discussion - Arabic gcse speaking questions - What are 4 indicators of a chemical reaction - Social media, death, and a space for mourning. - Cis 500 week 4 - Preferred products has issued preferred stock with an - Hindu symbols and meanings - Double pole double throw relay schematic - Hansson private label case excel - How many atoms are in 0.70 mol of iron - Autocad export tool palette - Assignment: Writing a Review - Business Organizations - Shakespeare navigators romeo and juliet - Roaring flame bunsen burner - Gro birth certificate application form - Zach tuohy tattoo on right arm