A student collecting CaCO3 produced by the reaction of Na₂CO3(aq) and CaCl₂ (aq) obtains a percent yield of 81%. Choose all of the following observations that could explain the low yield. The precipitate was not washed prior to drying. The filter paper was not wetted with water prior to filtering the precipitate. The student did not completely dry the precipitate before weighing it. A rubber policeman was not used to scrape precipitate from the beaker. The combined reactants were not stirred before filtering the precipitate. None of the above. X

A student collecting CaCO3 produced by the reaction of Na₂CO3(aq) and CaCl₂ (aq) obtains a percent yield of 81%. Choose all of the following observations that could explain the low yield. The precipitate was not washed prior to drying. The filter paper was not wetted with water prior to filtering the precipitate. The student did not completely dry the precipitate before weighing it. A rubber policeman was not used to scrape precipitate from the beaker. The combined reactants were not stirred before filtering the precipitate. None of the above. X

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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