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er F Laboratory Questions 6 13 20 1. Based on the procedure of this experiment, explain the effect of the following actions on the 2 measured masses of the components indicated. Where indicated, also address the effect on he percent recovery. The choices include: lower, higher, no effect or could be higher or lower. If the answer could be higher or lower, provide a detailed explanation. a) Sublimation of NH4C1 was not complete. How does this situation affect the measured mass of NH4CI and the percent recovery? b) While decanting, some of the salty water was spilled onto the lab bench. How does this situation affect the measured mass of NaCl and the percent recovery? C) While decanting, some of the sand was inadvertently transferred to the second evaporating dish. How does this situation affect the measured masses of NaCl and SiO2 and the percent recovery? d) While weighing the first evaporating dish after subliming the NH4C1, the balance was not properly set to zero prior to the measurement. How does this situation affect the measured mass of NH4C1? e) While drying the NaCl, some of the solution splashed onto the watch glass causing salt to deposit on the watch glass. How does this situation affect the measured mass of NaCl? f) While drying the sand, formation of steam caused some the sand to eject out of the container and onto the lab bench. How does this situation affect the measured mass of SiO2 and the percent recovery? 2. Could the separation in this experiment have been done in a different order? For example, if the mixture was first extracted with water and then the extract and the insoluble residue both heated to dryness, could you determine the amounts of NaCI, NH4C1, and SiO2 originally present? Note that both NaCl and NH4C1 are soluble in water. Based on the interpretation, there could be more than one correct answer. Your answer should be justified with a detailed explanation. 89

er F Laboratory Questions 6 13 20 1. Based on the procedure of this experiment, explain the effect of the following actions on the 2 measured masses of the components indicated. Where indicated, also address the effect on he percent recovery. The choices include: lower, higher, no effect or could be higher or lower. If the answer could be higher or lower, provide a detailed explanation. a) Sublimation of NH4C1 was not complete. How does this situation affect the measured mass of NH4CI and the percent recovery? b) While decanting, some of the salty water was spilled onto the lab bench. How does this situation affect the measured mass of NaCl and the percent recovery? C) While decanting, some of the sand was inadvertently transferred to the second evaporating dish. How does this situation affect the measured masses of NaCl and SiO2 and the percent recovery? d) While weighing the first evaporating dish after subliming the NH4C1, the balance was not properly set to zero prior to the measurement. How does this situation affect the measured mass of NH4C1? e) While drying the NaCl, some of the solution splashed onto the watch glass causing salt to deposit on the watch glass. How does this situation affect the measured mass of NaCl? f) While drying the sand, formation of steam caused some the sand to eject out of the container and onto the lab bench. How does this situation affect the measured mass of SiO2 and the percent recovery? 2. Could the separation in this experiment have been done in a different order? For example, if the mixture was first extracted with water and then the extract and the insoluble residue both heated to dryness, could you determine the amounts of NaCI, NH4C1, and SiO2 originally present? Note that both NaCl and NH4C1 are soluble in water. Based on the interpretation, there could be more than one correct answer. Your answer should be justified with a detailed explanation. 89

Chemistry
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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er F Laboratory Questions 6 13 20 1. Based on the procedure of this experiment, explain the effect of the following actions on the 2 measured masses of the components indicated. Where indicated, also address the effect on he percent recovery. The choices include: lower, higher, no effect or could be higher or lower. If the answer could be higher or lower, provide a detailed explanation. a) Sublimation of NH4C1 was not complete. How does this situation affect the measured mass of NH4CI and the percent recovery? b) While decanting, some of the salty water was spilled onto the lab bench. How does this situation affect the measured mass of NaCl and the percent recovery? C) While decanting, some of the sand was inadvertently transferred to the second evaporating dish. How does this situation affect the measured masses of NaCl and SiO2 and the percent recovery? d) While weighing the first evaporating dish after subliming the NH4C1, the balance was not properly set to zero prior to the measurement. How does this situation affect the measured mass of NH4C1? e) While drying the NaCl, some of the solution splashed onto the watch glass causing salt to deposit on the watch glass. How does this situation affect the measured mass of NaCl? f) While drying the sand, formation of steam caused some the sand to eject out of the container and onto the lab bench. How does this situation affect the measured mass of SiO2 and the percent recovery? 2. Could the separation in this experiment have been done in a different order? For example, if the mixture was first extracted with water and then the extract and the insoluble residue both heated to dryness, could you determine the amounts of NaCI, NH4C1, and SiO2 originally present? Note that both NaCl and NH4C1 are soluble in water. Based on the interpretation, there could be more than one correct answer. Your answer should be justified with a detailed explanation. 89
Transcribed Image Text:er F Laboratory Questions 6 13 20 1. Based on the procedure of this experiment, explain the effect of the following actions on the 2 measured masses of the components indicated. Where indicated, also address the effect on he percent recovery. The choices include: lower, higher, no effect or could be higher or lower. If the answer could be higher or lower, provide a detailed explanation. a) Sublimation of NH4C1 was not complete. How does this situation affect the measured mass of NH4CI and the percent recovery? b) While decanting, some of the salty water was spilled onto the lab bench. How does this situation affect the measured mass of NaCl and the percent recovery? C) While decanting, some of the sand was inadvertently transferred to the second evaporating dish. How does this situation affect the measured masses of NaCl and SiO2 and the percent recovery? d) While weighing the first evaporating dish after subliming the NH4C1, the balance was not properly set to zero prior to the measurement. How does this situation affect the measured mass of NH4C1? e) While drying the NaCl, some of the solution splashed onto the watch glass causing salt to deposit on the watch glass. How does this situation affect the measured mass of NaCl? f) While drying the sand, formation of steam caused some the sand to eject out of the container and onto the lab bench. How does this situation affect the measured mass of SiO2 and the percent recovery? 2. Could the separation in this experiment have been done in a different order? For example, if the mixture was first extracted with water and then the extract and the insoluble residue both heated to dryness, could you determine the amounts of NaCI, NH4C1, and SiO2 originally present? Note that both NaCl and NH4C1 are soluble in water. Based on the interpretation, there could be more than one correct answer. Your answer should be justified with a detailed explanation. 89
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