Q: 5. Why is it important that your glassware be dry for Part 2? Postulate as to what would have…
A: From the reaction equation, we can conclude that there is a equilibrium existing between the…
Q: Why does the amount of the dinitration increase at high temperatures?
A: At higher temperatures there is a greater chance of getting more than one nitro group substituted…
Q: When checking the melting point of your impure sample, what temperature should you set as the…
A: In the event that the inexact temperature at which your sample should melt is known, the sample can…
Q: 5. Discuss how melting points of the impure sample and recrystallized sample could have been used to…
A: Melting point is the temperature at which there is a change from the solid to the liquid state i.e.…
Q: What is the difference between the reaction of soap-water and synthetic detergent-water mixture to…
A: The composition of soaps is sodium stearate and composition of detergents is generally sodium…
Q: How does the volume of a solvent affect the purity of the material in recrystallization?
A:
Q: What is the drying agent used? What is the purpose of this drying agent?
A: Organic compounds can be defined as the compounds that contain carbon and hydrogen atoms.
Q: Why should you use cold water to rinse the acetaminophen in the Buchner funnel?
A: The solubility of acetaminophen is very less in cold water.
Q: What is the difference between oil/water (O/W) type and water/oil (W/O) type emulsions? Give an…
A: Emulsions are the mixtures of 2 or more than 2 liquids that are generally immiscible. It is a type…
Q: Why should solid diazonium salts never be separated from their mother liquor by filtration?
A: Why solid diazonium salts never be separated from their mother liquor by filtration - Let's discuss.
Q: True/False: While emulsions and microemulsions consist of the same 3 ingredients; aqueous phase, oil…
A: True.
Q: Why is recrystallization not applicable to samples which contain large amount of impurities?
A:
Q: This is the laboratory apparatus used for liquid-liquid extraction. Florence flask Volumetric flask…
A: For liquid liquid extraction is extraction of a particular compund from a solution with the help of…
Q: Describe the five processes of purifying organic compounds and give one example for each.…
A: Various methods are used for the purification of organic compounds.
Q: omega-3/g oil, respectively. Calculate the omega 3 extraction efficiency for each temperature based…
A: Weight of kernels crushed for extraction of omega-3 = 5 g (i) From the % yield, calculate the amount…
Q: 3.Why is it dangerous to perform distillation on a closed (airtight) system?
A: The process distillation involves the conversion of a liquid into vapour that is subsequently…
Q: You measured the melting point of the recrystallized product Ttal=142,2-145,5°C. Based on this…
A: Given that, Melting point of recrystallized product = 142.2℃ to 145.5℃ .
Q: Describe chromatography analysis, the two essential phases used in paper chromatography and provide…
A: Chromatography is an analytical technique used for the identification, separation and purification…
Q: What are some advantages of the membrane filter technique in the analysis of a water sample? Some…
A:
Q: Enumerate at least two important things to do to maximize yield when using vacuum filtration in the…
A: Aspirin is produced chemical synthesis from salicylic acid, through acetylation with acetic…
Q: What kind of sample cleanup does solid-phase extraction accomplish in the analysis of caffeine and…
A: Introduction: Extraction is the process of separation of the molecules. There are two types of…
Q: look for at least three extraction methods for perfumery materials.
A: There are several methods which are used for extraction of the perfumery materials from different…
Q: Which of the following devices should be used to heat the distillation flask? a) heating mantle b)…
A: Distillation process involving the conversion of a liquid into vapour that is subsequently condensed…
Q: What are the important solubility characteristics for a solvent for crystallization of an organic…
A: Compounds that are formed form organic synthesis are generally impure and requires purification.…
Q: Which solvent system was used for the recrystallization of acetanilide? O acetone-water 1:2…
A: 1. We must have an basic idea about recrystalization. 2. Recrystalization needs a solvent. 3.…
Q: 1. Before manufacturing process begins the sources of suitable fragrances are ______ in the…
A: 1. This sentence is about the manufacturing of a perfume in the manufacturing center. Collection is…
Q: What was the solvent used in the preparation of the standard stock solutions? Water Methanol Mobile…
A: methanol
Q: What effect would the incomplete drying of a sample (e.g., the incomplete removal of a…
A: The melting point will be lowered and broadened.
Q: Write the dispersed phase and dispersion medium of paints.
A: Colloidal solution contains two phase: dispersed phase and dispersion medium.
Q: Briefly explain the principles involved in the separation of the components of a mixture by solvent…
A: Extraction is a method used for the separation of organic compound from a mixture of compound. This…
Q: why should a small volume of the cold solvent be used for rinsing the pure crystal?…
A: Using a cold solvent, the impurities present in the surface of pure crystal is removed by rinsing…
Q: how to use Gas Chromatography in Cosmetics Provide a procedure on how to do this example that you…
A: Principle of Gas Chromatography :- Gas chromatography differs from other forms of chromatography in…
Q: What parameters should be considered when choosing between distillation methods? Are there any…
A: Distillation is refining method of refining by alternating evaporation and condensation to remove…
Q: Why is it necessary to immerse the flask both in hot and cold water for 5 minutes before taking the…
A: Accuracy is how close a value is to its true value. The accuracy is a measure of the degree of…
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: The best type of stationary phase for separation of negative ions is alumina C18/silica gel…
A: Negative ions are negatively charged ions. Negatively charged ions binds to only positively charged…
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: The best liquid mixtures for separation by simple distillation need to have boiling points that…
A:
Q: Mode of separation where the mobile phase can be composed of aqueous and organic phases. IEX NPLC…
A:
Q: Why is water not used as a solvent in extraction of nuts
A: A question based on extraction of nuts, which is to be accomplished.
Q: what is the purpose of steam distillation? and what are the factors involved ?
A: Steam distillation is a separation process which purifies isolate temperature-sensitive materials,…
Q: What are the benefits of using slightly more solvent than necessary when dissoving a compound for a…
A: Recrystallization is a process of purifying a solute when it is soluble in the solvent only on…
Q: What is the difference between gel filtration and gel permeation?
A: Gel Filtration Chromatography is a technique which use to sperate out the molecules by there the…
Q: Filter paper is usually a poor material on which to powder a solid sample before introducing it…
A: Filter paper is not used as material on which substance can be powdered before its addition into…
Q: BRIEFLY explain why steam distillation can be used to purify or isolate temperature-sensitive…
A: A question based on analytical separation that is to be accomplished.
Q: Explain the reasons for the importance of crystallization step involved in the manufacturing of bulk…
A: Crystallization is the process that leads to the formation of a well organized and rigid structure…
Q: why do we have to order samples (from least concentrated -most concentrated) when measuring the…
A: A question based on qualitative analysis, which is to be accomplished.
Why must the oven temperature be kept below 100°C when drying your chemical product?
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- BRIEFLY explain why steam distillation can be used to purify or isolate temperature-sensitive materials.What is the function of a desiccant in a set-up of volatilization gravimetry? To remove nitrogen from the sample To remove sulfuric acid from the sample To remove water vapor from the sample To remove carbon dioxide from the sampleWhat are the differences between a simple distillation and steam distillation?
- What is the main drawback of using steam distillation in the isolation of volatile oils from its matrix?Contrast the physical appearance of the crude material before the recrystallization and that of the material isolated after recrystallization.Why is it important to cool slowly during recrystallization
- What characteristics must a substance possess for it to be separated from a heterogeneous mixture by steam distillation?DISTILLATION Why is it dangerous to heat a compound in a distilling assembly that is closed tightly at every joint and has no vent or opening to the atmosphere?Take 100ml of the Foam Bath that contains Sodium Laureth Sulphate Cocamide DEA and add sodium chloride solution in incremental amounts whilst stirring, until more than 5% has been added. Note any physical changes that occur during the addition and stirring process.
- You measured the melting point of the recrystallized product Ttal=142,2-145,5°C. Based on this result, what can you say about your sample?Why is fractional distillation more efficient than simple distillation when purifying liquid mixtures?Briefly describe the principles for separating the components of a mixture by solvent extraction.