3. Solutions from the Erlenmeyer flasks may be poured down the sink 4. Wipe up your work area. 5. Wipe off and return the safety goggles to the cabinet (or place it in your drawer if it belongs to you). Note that once you put away your safety goggles, you must leave the lab. Remember to wash your hands before leaving. Pre-Lab Exercises 1. If 2.50 mL of vinegar requires 34.90 mL of 0.0960 M NaOH to reach the equivalence point in a titration, how many grams of acetic acid are in 500.0 mL of this vinegar? [density of vinegar = 1.01 g mL] 2. Calculate the mass % of acetic acid in the vinegar in the previous exercise (question#1 above). Assume that the density of the vinegar is 1.01 g mL. 3. If phenolphthalein is used as indicator, what color will the solution be at the endpoint? In your reading, it talks about errors that are possible when doing titrations, what are three of those possible sources of error? 4. Post-Lab Questions 1. What would happen if you forgot to add phenolphthalein indicator solution to the vinegar in step 3? Explain using full sentences. if theoretical molarity of HC2H3O2 is 0.975 M. Show
3. Solutions from the Erlenmeyer flasks may be poured down the sink 4. Wipe up your work area. 5. Wipe off and return the safety goggles to the cabinet (or place it in your drawer if it belongs to you). Note that once you put away your safety goggles, you must leave the lab. Remember to wash your hands before leaving. Pre-Lab Exercises 1. If 2.50 mL of vinegar requires 34.90 mL of 0.0960 M NaOH to reach the equivalence point in a titration, how many grams of acetic acid are in 500.0 mL of this vinegar? [density of vinegar = 1.01 g mL] 2. Calculate the mass % of acetic acid in the vinegar in the previous exercise (question#1 above). Assume that the density of the vinegar is 1.01 g mL. 3. If phenolphthalein is used as indicator, what color will the solution be at the endpoint? In your reading, it talks about errors that are possible when doing titrations, what are three of those possible sources of error? 4. Post-Lab Questions 1. What would happen if you forgot to add phenolphthalein indicator solution to the vinegar in step 3? Explain using full sentences. if theoretical molarity of HC2H3O2 is 0.975 M. Show
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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What are the answers to prelab questions 1-4
![3. Solutions from the Erlenmeyer flasks may be poured down the sink
4. Wipe up your work area.
5. Wipe off and return the safety goggles to the cabinet (or place it in your drawer if it
belongs to you). Note that once you put away your safety goggles, you must leave the
lab. Remember to wash your hands before leaving.
Pre-Lab Exercises
1. If 2.50 mL of vinegar requires 34.90 mL of 0.0960 M NaOH to reach the equivalence
point in a titration, how many grams of acetic acid are in 500.0 mL of this vinegar? [density
of vinegar = 1.01 g mL]
2. Calculate the mass % of acetic acid in the vinegar in the previous exercise (question#1
above). Assume that the density of the vinegar is 1.01 g mL.
3.
If phenolphthalein is used as indicator, what color will the solution be at the endpoint?
In your reading, it talks about errors that are possible when doing titrations, what are three
of those possible sources of error?
4.
Post-Lab Questions
1. What would happen if you forgot to add phenolphthalein indicator solution to the vinegar
in step 3? Explain using full sentences.
if theoretical molarity of HC2H3O2 is 0.975 M. Show](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ffd79fba8-061b-422c-b514-fff13f81eb92%2F1fa505f0-c2f5-4c3c-a049-6a4944f8b5fb%2Fripy82.jpeg&w=3840&q=75)
Transcribed Image Text:3. Solutions from the Erlenmeyer flasks may be poured down the sink
4. Wipe up your work area.
5. Wipe off and return the safety goggles to the cabinet (or place it in your drawer if it
belongs to you). Note that once you put away your safety goggles, you must leave the
lab. Remember to wash your hands before leaving.
Pre-Lab Exercises
1. If 2.50 mL of vinegar requires 34.90 mL of 0.0960 M NaOH to reach the equivalence
point in a titration, how many grams of acetic acid are in 500.0 mL of this vinegar? [density
of vinegar = 1.01 g mL]
2. Calculate the mass % of acetic acid in the vinegar in the previous exercise (question#1
above). Assume that the density of the vinegar is 1.01 g mL.
3.
If phenolphthalein is used as indicator, what color will the solution be at the endpoint?
In your reading, it talks about errors that are possible when doing titrations, what are three
of those possible sources of error?
4.
Post-Lab Questions
1. What would happen if you forgot to add phenolphthalein indicator solution to the vinegar
in step 3? Explain using full sentences.
if theoretical molarity of HC2H3O2 is 0.975 M. Show
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