**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.** There are no graphs or diagrams associated with this text. The text provides a hypothetical scenario in a chemistry lab concerning the measurement of a precipitate's mass.

Answered: evaporated, leaving only solid behind?…

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.**

There are no graphs or diagrams associated with this text. The text provides a hypothetical scenario in a chemistry lab concerning the measurement of a precipitate's mass.

Expert Solution

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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