Need help with question please 5- Which of the following would decrease the percent yield duringrecrystallization? {A- cooling in ice for too longB- using too much solventC- using too little solventD- not drying the crystals long enoughE- both b and d6- What is the purpose of the drying agent? (A- Add to the aqueous layer to remove any water contaminationB- Add to the organic layer to remove any water contaminationC- Add to the aqueous layer to remove contamination by organic productD- Add to both layers to remove excess acid or base3

(5) using too much solvent is the correct answer.Reason: if too much solvent is used then it will…

Answered: 5- Which of the following would…

Macroscale and Microscale Organic Experiments

7th Edition

ISBN:9781305577190

Author:Kenneth L. Williamson, Katherine M. Masters

Publisher:Kenneth L. Williamson, Katherine M. Masters

Chapter38: Grignard Synthesis Of Triphenylmethanol And Benzoic Acid

Section: Chapter Questions

Problem 8Q

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Which of the following statements is true when considering temperature during a recrystallization? More than one answer may be correct. Using ice to cool the sample will speed up the crystallization process so that large crystals will be formed. It is important that the sample is dissolved in just enough hot solvent. O Ideally the hot solvent used will keep the impurities dissolved OR not dissolve them at all. Enough cold solvent should be added to dissolve the sample BEFORE heating it past its boiling point.
= STATES OF MATTER Applying like dissolves like For each solute, click the button under the better solvent. solute CaCl₂ NaCl CH3 (CH₂) CH3 Which is the better solvent? CH3OH O CC14 H₂O CH₂(CH₂) CH3 4 CC14 H₂O
6. Describe the differences between flocculated and deflocculated suspensions. 7. What is the purpose of a wetting agent in a suspension dosage form?
c) b) d) 6. a) Which is likely to be on top, the aqueous or the organic layer*? *hint: which is more dense? CH3- The organic base 4-toluidine is prepared by reduction of 4-nitrotoluene (which is not basic). Both solids dissolve readily in dichloromethane (density = 1.316 g/mL), but poorly in water. A student trying to prepare 4-toluidine found that the reaction had not gone to completion. She then used solvent extraction to separate the 4-toluidine from unreacted 4-nitrotoluene as illustrated. Complete the balanced ionic equation for the reaction in step 2. 4-toluidine add NaOH to fraction 1 and filter add NaOH to fraction 1 and filter Circle the best way to recover 4-toluidine from this experiment -NH₂ + H3O+ add NaOH to fraction 2 and filter add HCI to fraction 1 and filter add NaOH to fraction 2 and filter add HCI to fraction 2 and filter Circle the best way to recover 4-nitrotoluene from this experiment add HCI to fraction 1 and filter dry and evaporate fraction 1 add HCI to…
powders and granules dosage forms have faster dissolution rate than capsules and tablets ,why?
preparation ofa) 500 g of 4.75% (w/w) aqueous ethanol.
29. You live in Morristown, NJ at 1 atmosphere pressure and want to add pasta to a pot containing 2000 g of boiling water at 103°C. How much NaCl should be added to elevate your water's boiling point from 100°C to 103°C? The molal boiling point elevation constant for water is 0.512°C/m. Set Up Format Concept Math
After water and benzene are mixed, we see two layers. A) True False B
Please help
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.
Crystallization is used to? a) Separate soluble solid from a liquid b) Separate insoluble solid from a liquid c)Purify water for drinking d)Purify crude oil
Coli2O Structure? 3 H B 2 H 1 H 2.5 2.0 1.5 1.0 ŏ (ppm)

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