A solvent or a mixture of solvents ideal for recrystallization of a compoundA. dissolves moderately large amount of the compound when hotB. dissolves very small amount of the compound when coolC. does not react with the compoundD. matches well with the compound in polarityE. All of above

A. dissolves moderately large amounts of the compound when hotB. dissolves very small amount of the…

Answered: A solvent or a mixture of solvents…

Macroscale and Microscale Organic Experiments

7th Edition

ISBN:9781305577190

Author:Kenneth L. Williamson, Katherine M. Masters

Publisher:Kenneth L. Williamson, Katherine M. Masters

Chapter5: Distillation

Section: Chapter Questions

Problem 11Q

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Explain and answer properly in recrystallization, after the crystals have formed (with cooling on standing), the solution can be cool with ice. why is this done ? a) To get the impurities to crystallize as well b) Less product is needed to saturate cold solvent so the yeild is higher c) The impurities are more soluble in cold solvent
2. An impure sample of compound D is contaminated with a number of impurities. The sample is to be purified by recrystallization. The solubility properties of three potential solvents are summarized below. Choose the best solvent and explain your answer. Include comments on each of the three solvents. Solubility of D at the boiling point Solubility of D at - 0°C of the solvent Solvent X 0.08g/mL 0.06 g/mL Solvent Y 0.67 g/mL 0.59 g/mL Solvent Z 0.63 g/mL 0.12 g/mL
How many grams of GaAs04 are required to prepare 2800 mL. of dissolution 0.035 N. ?
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No plagiarism please! 11. Describe a method to separate salt from a homogeneous mixture of salt water so that it is in the form of a solid at the end of the separation process.
Suppose that a saturated potassium bromide solution at 70°C is cooled to 20°C, how much crystals can be produced if: 1. the original solvent is 654.00 g? 2. the dissolved crystal is initially 54.90 g? 3. Right before crystal appear, calculate the concentration of the solution.
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Order the following solids (a-d) from least soluble to most soluble: a. SrS04, Ksp = 3.2x10-7 %3D b. Ca3(PO4)2, Ksp = 1.3×10-32 c. PbI2, Ksp = 1.4×10-8 d. MnS, Ksp - 2.3x10-13 %3D Solubility:

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A solvent or a mixture of solvents ideal for recrystallization of a compound A. dissolves moderately large amount of the compound when hot B. dissolves very small amount of the compound when cool C. does not react with the compound D. matches well with the compound in polarity E. All of above