Q: Construct a flowchart for the separation of p-methyl benzoic acid, p-methylaniline, and napthaline…
A: The moving of compound from one solvent to another solvent by changing the PH is known as acid base…
Q: Why should the recrystallization solvent have a fairly low boiling point?
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Q: what would be the implications if the volume reduction is skipped in the recrystallization
A: Recrystallization is a purification technique often employed in the labs. it is based on the…
Q: Why should a piece of filter paper inside the developing chamber be moistened with the developing…
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Q: Which is the more effective extraction technique, single or multiple extractions? Explain.
A: Extraction is a process for separating chemicals based on differences in solubility in two…
Q: After the drying step (with sodium sulfate), there was still water in the solution. What should the…
A: Topic : use of drying agent (Ex - Sodium Sulfate)
Q: 2. Complete the extraction flow chart for separating and recovering the following compounds as they…
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Q: The purity of triphenylmethanol is checked by TLC using 5% ethyl acetate/95% ligroin as the solvent.…
A: Given that, the polarity of the triphenylmethanol is chacked by TLC using 5% ethyl acetate/95%…
Q: How can we check that there is no more vanillin left in the organic layer after it has been…
A: Vanilin is an organic compound. It can extracted from the lignin waste and then can be separated…
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: Explain exactly what you would do when performing the following laboratoryinstructions; that is,…
A: To Find: To explain what you would do when performing the given instruction.
Q: Which analyte gives a positive result for the Molisch Test?
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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: Why Does The Flask Need To Be In An Ice Bath And The Sulfuric Acid Added Dropwise? Synthesis Of…
A: Sulphuric acid is a strong acid which react voilently with water and it is completely soluble in…
Q: At normal temperature, 5-bromoacetylsalicylic acid melts at 60 °C and is inert and nearly insoluble…
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Q: Suggest another way (besides vacuum filtration) to purify the partially oxidized benzaldehyde. 3.
A: We can purify the partially oxidised benzaldehyde as follows.
Q: Describe why the inside wall of the flask is rinsed with deionized water during accurate titration.…
A: During accurate titration we need to rinse the inside wall of the flask with de-ionized water…
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: 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: What impurity was likely removed during the recrystallization necessary ?
A: Recrystallization is the most important method of purifying nonvolatile organic solids.…
Q: What would happen to the your Kc values if you used an absorptivity constant of 6000 M-1, when the…
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Q: Why will the prepared standard solution of NaOH be stored in a rubber-stoppered reagent bottle?
A: The reaction NaOH( in the bottle) + CO2( from air)-----> Na2CO3 Sodium carbonate crystallise…
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: If you wish to extract aqueous acetic acid into hexane, is it more effective to adjust the aqueous…
A: Acetic acid is a weak acid which dissociate as CH3COOH ---------> CH3COO- + H+
Q: Given 60.00 g of the compound in 60.00 mL water. Calculate amount extracted using multiple (2 x…
A: Concept- In a multiple extraction procedure, a quantity of solvent is used to extract one layer…
Q: During separation of t-butyl chloride from the reaction mixture, what is the purpose of washing with…
A: In the preparation of t-butyl chloride from t-butyl alcohol using HCl a carbocation intermidiate is…
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: At what step in the recrystallization process would a colored impurity be removed?
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Q: Illustrate the process - Using a separatory funnel for extraction ?
A: Process of extraction using separatory funnel : a. Spot the separatory channel in an iron ring.…
Q: 5-bromoacetylsalicylic acid melts at 60 °C and is inert and almost insolube in water at room…
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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: Give 5 techniques that will ensure successful purification of an organic compound by…
A: The process of Recrystallisation is used to purify a compound by removing any impurities present in…
Q: Separating t-butyl chloride from the reaction mixture. What is the purpose of washing with the…
A: Given information: Separating t-butyl chloride from the reaction mixture.
Q: If some t-butanol were lost between after it's weighed in before the first run, how would the…
A: It is given that some t-butanol was lost between after its weight in before the first run.
Q: Draw an extraction flow chart for the extraction of a mixture of organic acid and phenol.
A: In this question we have been provided with a mixture of Organic acid and phenol, now we need to…
Q: What is the chemical reaction when completing extraction experiment and using 100mg Benzoic Acid,…
A: The mixture of the Benzoic acid in 2ml of water and Dichloromethane, the benzoic acid organic it is…
Q: Why is the refluxing time required for the synthesis of methyl salicylate is quite long?
A: Methyl salicylate is prepared using the following reaction:
Q: steps in purification of the mixture of benzoic acid and benzaldehyde
A: The mixture is reacted with Na2CO3 in which carboxylic acid reacts and forms a very soluble (in…
Q: In the procedure of the separation of Phensuprin using Acid-Base extraction, the bicarbonate…
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Q: Identify one water-soluble impurity that could be removed by washing the recrystallized dulcin with…
A: Dulcin is an artificial sweetener that is nearly 200 times more sweet than sucrose. Dulcin is…
Q: Why is the titration done with vigorous swirling?
A: Titration is the process of chemical analysis where the quantity of some constituent of sample is…
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: 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…
Q: The method of extraction for Roman chamomile is: Choose one answer. a. cold-press extraction b.…
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Q: 1. What was the purpose of the concentrated sulfuric acid in the first step in the synthesis of…
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Q: Under what conditions can a good separation be achieved with a simple distillation?
A: Simple distillation is a method of separating two compounds from a mixture on the basis of their…
Q: Define Separation of benzoic acid and cyclohexanol by an extractionprocedure ?
A: Solvent used : Ethyl acetate Wash used to dissolve benzoic acid : NaOH Add water to this mixture of…
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: Why is the methyl benzoate extracted with a Na2CO3 solution and why is MgSO4 added before the final…
A: To separate the methyl benzoate from the benzoic acid, Na2CO3 is dissolved in the mixture, benzoic…
Q: Consider the mordant dyes and alizarin red S results, specifically focusing on the use of copper…
A: The substance mordant dye can be described as the dyes that will be utilized for the dyeing of the…
Write a full Procedure of Recrystallization of p-Nitroaniline.
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- steps in purification of the mixture of benzoic acid and benzaldehyde5-bromoacetylsalicylic acid melts at 60 °C and is inert and almost insolube in water at room temperature. Why can’t water be used as recrystallizing solvent for this compound?At normal temperature, 5-bromoacetylsalicylic acid melts at 60 °C and is inert and nearly insoluble in water. Why is it that water cannot be utilized as a recrystallizing solvent for this compound?
- Purification of benzoic acid 1. What is the purpose of washing the crystal in the filter paper with water? 2. How recrystallization affects the theoretical yield of sample? Explain.What impurity was likely removed during the recrystallization necessary ?1)Write the principle behind reflux technique. 2)The role of recrystallization of dibenzalacetone
- 1.Device a flow chart that outlines the separations performed in acid-base extraction. Acid- benzoic acid Base- p-nitroaniline Neutral compound - azobenzene 2. Write all chemical reactions that occur in the extraction procedure.1. Why are the acidic extracts and the basic extracts cooled before neutralization during Acid/Base extraction experiment? 2. Why was the water used for washing the precipitates on the funnels specified to be cold during Acid/Base extraction experiment.Illustrate the process - Using a separatory funnel for extraction ?
- Propose an extraction flowchart capable of separating this compound into its pure formIn the first part of your extraction, you added NaOH until the pH was 8. Why is a pH of 8 desired? Why is this pH 8 desired when isolating or extracting caffeine from a drink?in a liquid-liquid extraction, why is ethyl acetate a good initial solvent to dissolve a mixture of benzoic acid, 4-bromoacetophenone and ethyl 4-aminobenzoate? the extraction solvent is sodium bicarbonate.