Q: What is deionized water? What kind of impurities are not removed by deionization?
A: Purified water does not contain any impurity. There are various methods for purification of water…
Q: What is inert gas regeneration method?
A: Inert gases form the 18th group of periodic table. Inert gases like Helium, Neon are used in…
Q: Although we will not use a Claisen adapter in our apparatus, what quality of vacuum distillation…
A: Vacuum distillation is a kind of distillation process based on the differences in the boiling points…
Q: Give one lysis buffer that is commonly used for western blotting experiments and include its…
A: 1. Answer - The RIPA buffer (lysis buffer) is one of the most commonly used buffers in used for…
Q: Which of the following solvent systems are not suitable for binary solvent recrystallization?
A: a) water and heptane
Q: Why should a piece of filter paper inside the developing chamber be moistened with the developing…
A:
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…
Q: Why mixture of solvents such as ethyl acetate with 5% acetic acid is used as a solvent/mobile phase…
A: TLC (Thin layer chromatography) is a technique to separate the components of mixture. TLC uses a…
Q: Why line extraction from a point cloud is needed ?
A: Planar structure extraction from point clouds is an important process in many applications.
Q: Suppose we start with 3.0g of contaminated benzoic acid. After recrystallisation we end up with 2.3g…
A: Given Mass of contaminated benzoic acid = 3.0 g Mass of pure benzoic acid = 2.3g
Q: Why is catalytic dewaxing not considered as a separation process?
A: Since Catalytic dewaxing involves breaking and making bonds, so it is usually referred to as a…
Q: a) Discuss the effect of solvent polarity on Rf-values. b)Explain how the Rf (Retention…
A: Since you have posted two questions, we will solve first question for you. Please repost other…
Q: Why is methanol chosen as the solvent for recrystallization? What would happen if the student uses…
A: Most of the organic compound is dissolved in alcohol like methanol and ethanol . methanol is easy to…
Q: Describe briefly on each of the following sample preparation protocols: 1. Dissolve/filtration 2.…
A: Hi, as you have posted multiple subparts in a single question and have not mentioned which subparts…
Q: why would ethanol (solvent) be used in recrystalization?
A: Recrystallization is a process used to purify the solid substances by dissolving them in a liquid.…
Q: What is the reason for using as little ethanol as possible to dissolve the crude product before…
A: For recrystallization, it is recommended to use minimum solvent to support the goal of recovering…
Q: Why is it not necessary to dry the Erlenmeyer flask between each trial?
A:
Q: Of Aspirin, ethanol, acetaminophen, ethyl acetate, hexane, and water which could go undetected…
A: HPLC or high perfomance liquid chromatography is a usefull technique to separate and analyse…
Q: Explain melting point determination as a characterization technique.
A:
Q: 1. Which is a false statement regarding solid-phase synthesis?
A: A solid phase synthesis is a heterogeneous reaction technique in which a reagent reacts with the…
Q: Why sometimes derivatization is used in the sample preparation for GC-MS?
A: The role of derivatization in GC-MS is given below
Q: Why is it necessary to recrystallize the alum and to perform it in a well ventilated area?
A: It is method in which Non volatile organic solid can be purify, this process is also used in…
Q: In a liquid - liquid extraction, what is preferable? Three extractions with a small volume or one…
A: Liquid-liquid extraction is also known as solvent extraction or solvent partitioning. In this…
Q: Explain the difference between absorption and adsorption in natural dyes. Use sketches to clarify…
A: Please find your solution below : Absorption is the process in which absorbed material is uniformly…
Q: which would be the best extraction procedure to ensure thorough removal of a carboxylic acid…
A: When we get carboxylic acid as an by product in an organic layer ,it becomes important to remove it.
Q: Explain the function of using dichloromethane after the steam extraction of Eugenol. Also discuss if…
A: Answer - During the process, Eugenol is extracted from the distillate with dichloromethane and…
Q: What are some reasons why the melting point might be lower than the literature value? (Hint: Assume…
A: A pure compound generally melts over a range of temperature. If the melting point of the sample is…
Q: is mobile phase the eluting solvent?
A:
Q: We want to extract terpenoids from an aqueous sample by continuous liquid-liquid extraction. Which…
A: The solution is given below -
Q: Why was n-octanol chosen as a surrogate for natural organic phases? Why not another solvent such as…
A: A question based on introduction to organic chemistry that is to be accomplished.
Q: What experimental procedure can be utilized for the sulphonation of Benzene?
A: Given What experimental procedure can be utilized for the sulphonation of Benzene?
Q: Acetophenone is soluble in diethyl ether, isopropanol, and n-hexane. Identify and justify the most…
A: For UV-Vis characterization of a compound, the substance should be taken in such a solvent so that…
Q: Why do we use a salt bridge during calomel measurement
A:
Q: After acid-base extraction why is it important to wash organic layer at least once with pure water?
A: A question based on quantitative analysis, which is to be accomplished.
Q: What is the use of the glass rod in transferring liquid reagents?
A:
Q: steps of the mechanism of extraction and drying of ethyl acetate with caffeine and water.
A: Please note that there is a mistake in the question and the correct statement should be 'caffeine…
Q: Briefly, discuss reflux and why it is commonly used in organic chemistry.
A: Here a term 'reflux' is given.Generally it is used in organic chemistry. We have to discuss about…
Q: Explain why it is needed to filter the solvent before introducing it to the HPLC system
A: Basically there are following two reasons for using filtration during HPLC sample preparation are…
Q: 1.what data must be available when HPLC method is passed on 2.why eluents should be degassed
A: 1.data needed for HPLC: HPLC is High performance liquid chromatography. Chromatography: It is a…
Q: Why is it required to add drying agent like sodium sulphate to the organic layer which may contain…
A: In an organic solution, there are often traces of water present because water is slightly soluble in…
Q: Why is there a need to add concentrated H2SO4 to the centrifugate and evaporating almost to dryness…
A: There is a need to add concentrated (H2SO4) to the centrifugate and evaporating almost to dryness…
Q: palm oil with carcinogenic dyes
A: The adulteration of palm oil with many fat soluble azo dyes that are difficult to separate from the…
Q: 2) determine the identity of an unknown solid. Briefly explain why the experimental technique of…
A: The Temperature at which the solid state compound transform into liquid state without changing its…
Q: If insoluble impurities, e.g., dust, tissue, filter paper, etc., were mixed with the sample, how…
A: Insoluble impurities The term "insoluble impurities" refers to contaminants that settle or float on…
Q: Purpose of quantitative transfer in experiments.
A: The dissolution of a solute in a solvent based on its solubility rule provides a solution. If the…
Q: 1. Why does the solid need to be finely ground and then tightly packed in a melting point capillary…
A: The temperature at which the solid melts and starts converting into liquid is called as melting…
Q: Why is 95% alcohol a good solvent for extraction?
A: The substance which is present in lesser amount is termed as solute. The substance which is present…
Q: Explain the possible behaviour and extractability of these compounds using sample extraction…
A: "Since there are multiple sub-parts in this question and it is not mentioned that which one has to…
Explain the working of fixed-bed carbon solvent recovery system.
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- The scientific report of Nitration of methyl benzoate the aim, hypothesis, introduction, risk assessment, apparatus, procedure, results,evaluation and discussion with resourcesWhat are relative advantages and disadvantages of organicsolvent,aqueous two-phase, and supercritical-fluid extraction for recovery of bioproducts?Briefly, discuss reflux and why it is commonly used in organic chemistry.
- give two examples of internal standards for menthol and thc analysis.1. Cite one factor that affects percent yield during recrystalization. 2. Discuss the importance of solvent-solvent partition in separating mixtures.percentage recovery of benzoic acid is 77.18%. The melting point range of crude benzoic acid = 112-119°C and the melting point range of pure benzoic acid (crystals) = 122-125. Comment on the percentage recovery of benzoic acid. Comment and compare the melting point of the crude and crystal samples
- Acetone and isopropyl alcohol are generally not suitable for use in extraction, but are frequently used as recrystallization solvents. ExplainAnswer the questions below. a) 500 ml. Acetic acid in 200 mL acetic acid-water mixture containing 30% acetic acid by volume with pure isopropyl ether will be separated by LIQUID-LIQUID extraction. Assuming the dispersion coefficient of acetic acid in isopropyl ether+water carjumine is 2, calculate the amount of acetic acid that passes into the organic phase and the extraction yield. b) What are the desired properties of the solvents used in liquid-liquid extraction processes?In vacuum filtration, the filter paper should be wet before the final product solution is poured into the buchner funnel. Explain why such an action should be implemented.
- liquid-liquid extraction(LLE)PrinciplesFractioned Distillation Microscale Looking at this set up, are there any potential problems with it? Please explain.Using any chemical concept (like concepts in liquid liquid extraction, concepts in recrystlliazation, etc) in an expirment of extraction of Caffein, make a connection to ONE of the following: 1) an event in the news, 2) your career plans, 3) a hobby of yours, 4) another course you are taking, or 5) your personal life.Your writing should find at least one way, if not more, in which the chemical concept you have chosen to talk about is demonstrated in the connection.