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A solution failed to undergo recrystallization. Which of the following steps may be taken to induce crystallization? O a. Adding a small piece of metal O b. All of the other choices c. Adding a small amount of pure crystal d. Adding a small amount of solvent Clear my choice

A solution failed to undergo recrystallization. Which of the following steps may be taken to induce crystallization? O a. Adding a small piece of metal O b. All of the other choices c. Adding a small amount of pure crystal d. Adding a small amount of solvent Clear my choice

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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A solution failed to undergo recrystallization. Which of the following steps may be taken to induce crystallization? O a. Adding a small piece of metal O b. All of the other choices O c. Adding a small amount of pure crystal O d. Adding a small amount of solvent Clear my choice Which of the following can be said true about the reaction below? 12(aq) + Pb(s) → Pbl2(0) 1. It is a double displacement reaction II. It is a synthesis reaction II. Precipitation will occur IV. If l2(ag) is the limiting reactant, the precipitate is expected to be impure. V. The name of the product is lead (II) iodine. a. II, IV, and V only O b. 1, II, and III only O c. II, II, and IV only O d. Answer is not in the choices Clear my choice
Transcribed Image Text:A solution failed to undergo recrystallization. Which of the following steps may be taken to induce crystallization? O a. Adding a small piece of metal O b. All of the other choices O c. Adding a small amount of pure crystal O d. Adding a small amount of solvent Clear my choice Which of the following can be said true about the reaction below? 12(aq) + Pb(s) → Pbl2(0) 1. It is a double displacement reaction II. It is a synthesis reaction II. Precipitation will occur IV. If l2(ag) is the limiting reactant, the precipitate is expected to be impure. V. The name of the product is lead (II) iodine. a. II, IV, and V only O b. 1, II, and III only O c. II, II, and IV only O d. Answer is not in the choices Clear my choice
Which of the following can most likely increase the yield of recrystallized benzoic acid? O a. A fluted filter paper was used during cold filtration. O b. The receiving flask from hot filtration does not contain a small amount of solvent. O c. Activated charcoal was not added to the solution. d. The solution was filtered immediately after hot filtration. Clear my choice Which of the following statements regarding purification by recrystallization is FALSE? i. Activated charcoal removes insoluble impurities ii. Water is the best recrystallization solvent for organic compounds iii. Slow cooling permits the exclusion of the solvent from the recrystallized solid o a. i only O b. i and i O c. i, ii, and i O d. i and ii Clear my choice
Transcribed Image Text:Which of the following can most likely increase the yield of recrystallized benzoic acid? O a. A fluted filter paper was used during cold filtration. O b. The receiving flask from hot filtration does not contain a small amount of solvent. O c. Activated charcoal was not added to the solution. d. The solution was filtered immediately after hot filtration. Clear my choice Which of the following statements regarding purification by recrystallization is FALSE? i. Activated charcoal removes insoluble impurities ii. Water is the best recrystallization solvent for organic compounds iii. Slow cooling permits the exclusion of the solvent from the recrystallized solid o a. i only O b. i and i O c. i, ii, and i O d. i and ii Clear my choice
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