evaporated, leaving only solid behind? Then the beaker with the precipitate could be weighed, and the difference between this mass and that of the empty beaker would be the mass of the precipitate. This would eliminate the need for the filtration step. Explain why
evaporated, leaving only solid behind? Then the beaker with the precipitate could be weighed, and the difference between this mass and that of the empty beaker would be the mass of the precipitate. This would eliminate the need for the filtration step. Explain why
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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![13. A chemistry student offers a possible improvement to this lab. Since one goal of this lab is
to determine the mass of the precipitate produced, wouldn't it be possible to measure the
mass of an empty beaker, mix the solutions, and boil off the water until it is entirely
evaporated, leaving only solid behind? Then the beaker with the precipitate could be
weighed, and the difference between this mass and that of the empty beaker would be the
mass of the precipitate. This would eliminate the need for the filtration step. Explain why
this is a poor suggestion. Remember to check your reasoning on this question and all other
questions with your instructor.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fb2e1466d-1f0c-4b2b-8d5d-4c40ddbd2a7e%2Fbd8e3df9-aa18-4016-ba97-51586f8b465f%2Fyqb6hvc_processed.png&w=3840&q=75)
Transcribed Image Text:13. A chemistry student offers a possible improvement to this lab. Since one goal of this lab is
to determine the mass of the precipitate produced, wouldn't it be possible to measure the
mass of an empty beaker, mix the solutions, and boil off the water until it is entirely
evaporated, leaving only solid behind? Then the beaker with the precipitate could be
weighed, and the difference between this mass and that of the empty beaker would be the
mass of the precipitate. This would eliminate the need for the filtration step. Explain why
this is a poor suggestion. Remember to check your reasoning on this question and all other
questions with your instructor.
Expert Solution
![](/static/compass_v2/shared-icons/check-mark.png)
Importance of filtration
In gravimetric analysis , once when the precipitate is formed , we should filter the precipitate and wash it . This filtration and washing step removes the insoluble impurities that are directly attached with the precipitate . This makes the precipitate pure and hence an accurate mass of it can be determined.
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