1. If all the impurities in a certain sample are soluble in the solvent being used, would it be necessary to do a hot filtration? Explain why or why not. 2. Use the following solubility data to answer all parts of this question. You can assume that the presence of one compound in solution does not affect or change the solubility of another compound in that same solution. Compound Benzoic acid Impurity Solubility in water at 25°C 0.34 grams per 100 mL of water 0.50 grams per 100 mL of water A. Will 5.7 grams of benzoic acid dissolve in 100 mL of water at 95°C? B. If 4.50 grams of benzoic acid are dissolved in 100 mL of hot water and then allowed to cool to 25°C followed by vacuum filtration, how many grams of benzoic acid crystals would be obtained? Show your work. Solubility in water at 95°C 6.81 grams per 100 mL of water 4.25 grams per 100 mL of water What percentage of the original benzoic acid sample is this? In other words, what is your percent recovery of benzoic acid crystals? Show your work. I to 224
1. If all the impurities in a certain sample are soluble in the solvent being used, would it be necessary to do a hot filtration? Explain why or why not. 2. Use the following solubility data to answer all parts of this question. You can assume that the presence of one compound in solution does not affect or change the solubility of another compound in that same solution. Compound Benzoic acid Impurity Solubility in water at 25°C 0.34 grams per 100 mL of water 0.50 grams per 100 mL of water A. Will 5.7 grams of benzoic acid dissolve in 100 mL of water at 95°C? B. If 4.50 grams of benzoic acid are dissolved in 100 mL of hot water and then allowed to cool to 25°C followed by vacuum filtration, how many grams of benzoic acid crystals would be obtained? Show your work. Solubility in water at 95°C 6.81 grams per 100 mL of water 4.25 grams per 100 mL of water What percentage of the original benzoic acid sample is this? In other words, what is your percent recovery of benzoic acid crystals? Show your work. I to 224
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...
Related questions
Question
Answer all questions please
Transcribed Image Text:Recrystallization of Acetanilide: POSTLAB
1. If all the impurities in a certain sample are soluble in the solvent being used, would it
be necessary to do a hot filtration? Explain why or why not.
2. Use the following solubility data to answer all parts of this question. You can assume
that the presence of one compound in solution does not affect or change the solubility
of another compound in that same solution.
3.
Compound
Benzoic acid
Impurity
Solubility in water at 25°C
0.34 grams per 100 mL of water
0.50 grams per 100 mL of water
A. Will 5.7 grams of benzoic acid dissolve in 100 mL of water at 95°C?
B. If 4.50 grams of benzoic acid are dissolved in 100 mL of hot water and then allowed
to cool to 25°C followed by vacuum filtration, how many grams of benzoic acid
crystals would be obtained? Show your work.
Solubility in water at 95°C
6.81 grams per 100 mL of water
4.25 grams per 100 mL of water
What percentage of the original benzoic acid sample is this? In other words, what
is your percent recovery of benzoic acid crystals? Show your work.to
C. A sample of impure benzoic acid has a mass of 6.00 grams. This sample consists of
4.50
grams of benzoic acid and 1.50 grams of the impurity listed in the table above.
Suppose that this 6.00 gram sample is dissolved in 100 mL of water at 95°C and
then allowed to cool to room temperature (about 25°C). The crystals that form are
then filtered out.
Are these crystals pure benzoic acid?
To be sure you have answered correctly, complete the following two calculations.
ow wode
How many grams of benzoic acid will crystallize when the solution has cooled?
Show your work.
How many grams of the impurity will crystallize when the solution has cooled?
Show
your work.
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 3 steps with 3 images
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Recommended textbooks for you
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY