what does running a “Dry Reflux” mean? What modifications would you have to make to your reflux apparatus and what's the purpose of the additional chemicals.

Q: Write the principle behind the froth floatation process. What is the role of collectors in this…

A: Various processes are used for extraction of minerals. These minerals are very useful for…

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: How do you filter benzoic acid in water through the apparatus?

A: The process which is used to purify the impure compound from a solvent is known as recrystallisation…

Q: Is recrystallization a good method for purifying any product?

A:

Q: Please help me this question, thank you! "Why is using a drying agent a necessary step?"

A: Drying agent is an agent that has the property to absorb excess water or the traces of water and…

Q: For liquid water list all IMFs that have to be broken for it to mix with acetone

A: liquid water mix with acetone

Q: 4. The reflux set-up in the experiment allows prolonged heating of the liquid reactants for them to…

A: In organic chemistry experiment, reflux technique is used used to obtain the product in chemical…

Q: For either of these solvents explain why it would be a better choice as a recrystallization solvent…

A: Recrystallization is a technique used to purify compound. For recrystallization, dissolving both…

Q: Why is recrystallization not applicable to samples which contain large amount of impurities?

A:

Q: What are the advantages and disadvantages of liquid-liquid extraction method?

A: Principal of liquid-liquid extraction method :

Q: Suggest various methods to remove temporary and permanent hardness of water with appropriate…

A:

Q: Explain what the liquid-liquid extraction technique consists of

A: Liquid–liquid extraction  also known as solvent extraction and partitioning.

Q: The use of dilute nitric acid as a washing liquid

A: The use of dilute nitric acid as a washing liquid :-

Q: When isolating a solid compound after recrystallization, which is the appropriate technique to use,…

A: Recrystallization is an experimental technique of separating pure compound from the solution…

Q: If you did not completely dry the Erlenmeyer flask before weighing the result, how would that affect…

A: Given : You did not completely dry the Erlenmeyer flask before weighing the result.

Q: Do you use the bulb to help dispense the liquid from the pipette? Why or why not?

A: A pipette is used to accurately dispense the exact amount of a small amount of liquid like 10.00 mL,…

Q: Which statement about reflux setups is NOT correct? The boiling temperature of the solvent overlaps…

A: Refluxing allows the heating of the solution without the loss of solvent. The solvent vapors are…

Q: How are solvents chosen for recrystallization? (single solvent or mixed-solvent system).

A: "Since there are multiple questions and it is not mentioned that which one has to be solved so I am…

Q: Occasionally you will have solid impurities “trash” in your heated recrystallization solvent. How do…

A: The process used for the purification of organic compounds which are solids at room temperature is…

Q: Why do you have to keep all the equipment hot when removing carbon in recrystallization?

A: Recrystallization is technique used to purify solid compounds.

Q: If 250 mL of a 1:800 (v/v) solution were diluted to 1000 mL, what should be the ratio strength? The…

A:

Q: What is the purpose of chromic acid test? What is the evidence of positive result?

A:

Q: Why should the burette not be completely emptied when dispensing?

A: Since, burette is used for titration to determine strength of a solution.  We can take appropriate…

Q: what are possible sources of error in a soap making experiment? (non-human error) I want clear…

A: Soap making experiment involves the process of saponification in which the reaction of triglycerides…

Q: In an experiment the essential oils from herbs, were extracted with water. Explain how you will…

A:

Q: Many operations in the chemical laboratory use “salting out” in the procedure. What do the purpose…

A: We have find out the purpose of salting out technique in the chemical laboratory.

Q: In liquid, extraction, why is it necessary to turn the separatory funnel upside down and to open the…

A: Liquid-liquid extraction is also called solvent extraction is a method of separating compound from…

Q: In recrystallization, fluted filter paper is used instead of a regular cone because it minimizes its…

A: In recrystallization, an impure solid compound is mixed with hot solvent to form a saturated…

Q: Write the Separation of heavy metals using solvent extraction technique.

A: Solvent extraction is an analytical method in which constituents are separated based on their…

Q: What is the difference between combustion and pyrolysis?

A: Combustion can be defined as reaction in which the substance reacts with oxygen to give light and…

Q: Fill in the blanks: During the "salting-out" process in an extraction procedure, the replaces the

A: During Salting out during the extraction process there are certain proteins which are dissolved in…

Q: Name three (3) other types of samples that can be analyzed in a typical acidimetric process.Explain

A: Acidimetry, is a quantitative analysis method where the direct or residual titrimetric analysis of…

Q: for effective  purification by recrystalization while avoiding performing a hot gravity filtration,…

A: Recrystallization is used to purify a sample.

Q: Why should the washing solvent be cold in the suction filtration step?

A: Suction filtration is the final step for separating the compound from the solution during the…

Q: Why is it important to cool slowly during recrystallization

A: recrystallization is a process in which we dissolve an impure crystal in a solvent at high…

Q: What is the use of the glass rod in transferring liquid reagents?

A:

Q: Which refluxing apparatus is set up to keep moisture out? A OC O B and C OA OB none • Ren B PAGINION…

A: To keep the moisture out of your reaction, we have to use a drying tube and the inlet adapter in the…

Q: Why must the spots be above the level of the development solvent in the developing chamber?

A: Given statement,     The spots be above the level of the development solvent in the developing…

Q: 1. What are the two reactants used to synthesize the Aspirin? 2.  Why is water added to the…

A: Aspirin is synthesized through the esterification of salicylic acid by the acetic anhydride.The…

Q: Explain the fuctions of each part of the reflux set-up

A: Reflux setup consist of three parts -- 1) A heating system 2) a round flask 3) a condenser.  It is a…

Q: Which oil - olive oil or coconut oil - would you expect to have a higher peroxide value after…

A: The peroxide value indicates the amount of peroxide generated in an oil sample by exposure to…

Q: What is magnesium sulfate used for at the end of the extraction? How can it be removed?

A: Magnesium sulphate is a drying agent, 8t is used to remove the water from organic extract. Magnesium…

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: Give the rule in reading the meniscus when measuring colored and colorless solutions.

A: The rule in reading  the meniscus when measuring colored and colorless solution is given below.

Q: An overachieving student determines that their neutral liquid unknown contains impurities. Suggest…

A: The unknown solution contains liquid and impurities.

Q: Describe the procedure of how to collect and dry your newly recrystallized compound.

A: Recrystallization is the method that is used to purify the organic compounds. It involves the…

Q: When extracting an aqueous solution with an organic solvent and after agitation and settling, the…

A: Given information : When extracting an aqueous solution with an organic solvent and after agitation…

Micelles and Biological Membrane

Micelles are the type of lipid molecules that organize themselves in spherical shape in aqueous solutions. The production of the micelle is a reply to the amphipathic behavior of fatty acids. It means that they consist of both hydrophobic regions and hydrophilic regions. In micelles, polar head groups (hydrophilic groups) produce an outer layer associated with water whereas nonpolar tails (hydrophobic groups) are organized in the interior.