Q: A thin-layer chromatography (TLC) experiment was run using three compounds: benzophenone,…
A: on doing A thin-layer chromatography (TLC) experiment was run using three compounds: benzophenone,…
Q: 2. How would our experimental results change if a less polar mobile phase was used such as butanol…
A: In a reverse phase chromatography, the solid stationary phase is non-polar in nature and the liquid…
Q: Why was gravity filtration used instead of evaporation to isolate the calcium carbonate?
A: Calcium Carbonate is white, odorless powder or colorless crystals. Practically insoluble in water.…
Q: Why should deionized water to be used throughout the analysis
A: In any type of analytical method, most of the time we use deionised water because-
Q: Why should the solvent not be run off the top of the paper? . What color did you observe in the…
A: Q3) In paper chromatography, the solvent should not be run off the top of the paper.
Q: Aqueous sodium bicarbonate was used to wash the crude n-butyl bromide.a. What was the purpose of…
A: Crude n-butyl bromide is washed by sodium bicarbonate in the final step of synthesis.
Q: Consider the structures of cholesterol and ?-carotene. Which do you think will have the highest Rf…
A: Due to technical error ,unable to provide you the solution. Please resubmit the question once again
Q: How can the Eugenol content be separated from the alkaline solution?
A: Eugenol also known as clove oil. This oil is extracted from cloves and is used to treat toothache,…
Q: Which analyte gives a positive result for the Molisch Test?
A:
Q: 7. Why did you allow the reaction to settle before you took some of the solvent for spotting?
A: If the reaction is not complete, then components of the reaction mixture might include some…
Q: In the Iodination of Acetone, Why were the reagents equilibrated in water bath before mixing?
A: In iodination reactions iodine are introduced into a molecule. The iodination reaction of acetone…
Q: What is the purpose of the ammonium acetate in this experiment? How does it affect the ppt?
A: An ammonium salt obtained by reaction of ammonia with acetic acid. A deliquescent white crystalline…
Q: In the Iodination of Acetone, what are the possible sources of error in the experiment?
A: Please find your solution below : Iodination of acetone is an experiment performed in order to study…
Q: We used to perform this experiment using diethylether or THF as the reaction solvent. We now use…
A: Introduction: Solvents are mainly two kinds i.e. polar and nonpolar. The polarity of the solvent is…
Q: Why should the purified compound at the well (Buchner funnel) not be washed with a larger amount of…
A: Crystallization is the process by which is a solid form, where the atoms or molecules are highly…
Q: 3. A large excess of ammonia was used in the ammonolysis step. Why?
A: According to Q&A guidelines of Bartleby, we are supposed to answer only the first question out…
Q: Identify The resulting color of the solution upon the addition of dilute sodium hydroxide in…
A: In phthalein dye test when limited sodium hydroxide reacts with phenolphthalein the colour is pink.…
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: 1. Why are the acidic extracts and the basic extracts cooled before neutralization during Acid/Base…
A: Question 1 answer: Acid-Base reactions are exothermic. So, during neutralization the solutions can…
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: How to prepare primary emulsion by Forbes method and why this method is called Extemporaneous?
A: Given: Emulsions and bottle forbes method To find: Primary emulsion by bottle forbes method and why…
Q: 1.So if you were trying to extract 15mL of an aqueous layer, why wouldn’t you want to use 45mL of…
A: A question based on analytical separations that is to be accomplished.
Q: Why is methyl orange used in the assay of sodium bicarbonate?
A: Methyl orange is pink in basic solution and colourless in acidic solution. It responds to pH change.…
Q: What is phenolphthalein and why is it required in this experiment?
A:
Q: if 54.9% of ethenol is in the distillate what would be the sloute and the solvent in the mixture?…
A: Given that, % of ethanol = 54.9% then,
Q: Why is CH2Cl2 added to the collected distillate? Isolation of eugenol experiment
A: It is immiscible with water and has a higher density then water so it very in the bottom of the…
Q: 3. What is the function of the concentrated sulphuric acid in this experiment? 4. Why is the…
A:
Q: In this experiment, 1.0 mL of saturated sodium chloride is used to rinse the Hickman head after the…
A: The brine solution is used in the process as it minimizes the solubility of product into the water…
Q: The procedure requires the use of a 1.1 molar equivalent of benzyltriphenylphosphonium chloride…
A: Given data, Molar mass of BTPC = 388.90 g/mol Volume of benzaldehyde = 1.86 mL = 1.86cm3 Molar mass…
Q: 1) Calculate the volume of the concentrated sulfuric acid required. 2) What precautions are required…
A: Above equation is necessary for calculate the volume of concentrat H2SO4
Q: what are the clinical significance of (a) sodium nitroprusside test (b) Molisch Test
A: (a) the sodium nitroprusside test is used to determine the presence of ketoacids in the blood and…
Q: 2 Isolation of caffeine from black tea lab Original solvent used was dichloromethane. Alternatively…
A: Mix tea , dichloromethane and 0.2M NaOH and shake it well for 6-7 minutes. The organic layer will be…
Q: What is the purpose of the filter paper moistened with ammoniacal silver nitrate solution in the…
A: The purpose of the filter paper soaked with ammoniacal silver nitrate solution in the Acrolein test…
Q: the
A: Dear student I have given answer to your question in the image format
Q: Explain the following terms: (i) Electrophoresis (ii) Dialysis (iii) Tyndall effect
A: Since you have posted multiple independent questions in the same request, we will solve the first…
Q: Purification of benzoic acid 1. What is the purpose of washing the crystal in the filter paper with…
A: 1) Answer: Benzoic acid is prepared from toluene industrially. Toluene is react with cl2 gas under…
Q: what are the IR spectra changes when monitoring the following reaction?
A:
Q: What might have been the product ratios observed in this experiment if an aprotic solvent such as…
A:
Q: What are the intermolecular forces present in acetone?
A: Note: As per company policy we are supposed to attempt first question only , please repost other…
Q: Why is benzyl chloride reactive in both tests, whereas bromobenzene is unreactive?
A: The basis for the testing of sodium iodide and silver nitrate is to obtain a qualitative comparison…
Q: What is the purpose of the grignard reaction, preparation of triphenylcarbinol experiment.
A:
Q: What is the purpose of adding ammonium chloride in the assay?
A: Answer - Ammonium chloride has many purpose in chemistry. In general it can be used as a source of…
Q: What is the result in this experiment? ESTIMATION OF SODIUMHYDROXIDE USING HYDROCHLORIC ACID…
A: Conductometric Titration of HCl and NaOH
Q: Why must the sodium stannite which is used in the identification of bismuth be prepared just prior…
A: In the identification, a stepwise procedure is followed to detect a particular element.
Q: Using the table on slide 7, what ORGANIC solvent could you use to do an extraction of something from…
A: Since you have posted multiple questions, we will answer the first one for you. To get the remaining…
Q: 1.What is the advantage of using 12 in this experiment? 2. Why is the concentration of lodine much…
A: The iodination of acetone can be represented as:
Q: Briefly explain based on the IR spectra how well the reaction worked.
A:
Q: Why does scratching the inside of the flask with a glass stirring rod initiate crystallization?
A: The process by which solidification of molecules or atoms into a highly structured form called…
Synthesis of Nerolin
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- Why is the NaCl extracted with water three times as opposed to only once?1. What type of reaction explains solubility of phenol in sodium hydroxide? Explain the organic product formed. 2. How do the reactions of phenol samples with FeCl3 compare? Which structural component of the phenols account for the observation1. What is diazotization? Why are aromatic diazonium salts more stable thanaliphatic diazonium salts? 2. What is the purpose of adding 10% NaOH in the azo dye reaction?
- 1. What is the reason behind the portion-by-portion evaporation of DCM in the extraction of eugenol? 2. Enumerate some pharmaceutical and medical uses of eugenol 3. What does the ferric chloride test identify? Is it specific test for eugenol? Why or why not?1. A student wants to dry a solution of aniline in hexane. Which drying agent should he use for the task? Rationalize the choice. 2. If calcium oxide is used as a drying agent, what is obtained as a product? 3. Why is ill-advised to use P4O10 as drying agents for “wet” acetone?What is the melting point of Penguinone and how is it extracted?
- The objective of this lab was to oxidize borneol to camphor using Oxone as the oxidizing agent in the presence of sodium chloride.Why is the reaction mixture extracted with sodium bicarbonate? Give an equation and explain its relevance.2 A. could there be secondary product? B. Indicate why mud crystal is used in the reaction.