The key to a successful HPLC procedure is good sample separation which is represented by a clean peak for each individual compound. What should we do to ensure a good sample preparation? A. Use a column and a mobile phase with different polarity B. Use a column and a mobile phase with the same polarity C. Use a lower temperature higher than the mobile phase boiling point D. All of those

Q: c) You decide to use ethanol in conjunction with another solvent to make a solvent pair. What two…

A: CRYSTALLIZATION: A process in which solid crystals are produced from other state of matter like…

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A: As per bartleby guidelines we solved first question for you. Please find the below attachments.

Q: Why should the recrystallization solvent have a fairly low boiling point?

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Q: What is the benefit of using fluted filter paper instead of not folding it?

A: “Fluted “ filter paper (LEFT) is used when we wish to separate a liquid and a solid, keeping the…

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Q: Given each pair of compounds below, CIRCLE the one you would expect to elute from a silica…

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Q: 10. A racemic mixture of (R)- and (S)- citalopram (figure 4) needs to be separated by liquid…

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A: As per the bartleby expert guidelines, I am allowed to answer one question at a time. Please repost…

Q: Why do we know the aqueous layer is the upper layer during the wash steps?

A:

Q: We needed to let the sample dry before we checked purity. How would we be able to use the melting…

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Q: 44 R 0.50 R 0.30 No, the Rf values are too close together O No, there should be more lanes on the…

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Q: Which of the ff is not true about recrystallization?   a. acetanalide recrystallized only at cold…

A: Recrystallization is done to purify the compounds so as to get the purest form.

Q: 6. If more polar impurities are desired to be eluted first and then analyte, then at which stage do…

A: 6. If more polar impurities are desired to be eluted first and then analyte, then at step (c) i.e.…

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Q: How much water is required to dissolve Oxone?

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A: "The correct answer and explanation are given in the following steps"

Q: TLC

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Q: You are performing an aqueous extraction, and you forget which layer is the organic layer and which…

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Q: Crystal seeding

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Q: What method was used in the experiment to determine the boiling point of a sample? Select one: A.…

A: Here I have justified the experiment to determine the boiling point of sample

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Q: At what step in the recrystallization process would a colored impurity be removed?

A:

Q: What are some reasons why the melting point might be lower than the literature value? (Hint: Assume…

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A: Please find your solution below : Solvent extraction process, also known as liquid-liquid extraction…

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A: "The correct answer & explaination are given in the following steps"

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