What is the role of Sodium metal in Lassaigne's extraction?

Q: The white solid that remains in the centrifuge tube after acetone extraction fizzes when…

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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: Write the chemical equations involved for the reaction of cyclohexene with cold KMnO4

A: In the chemical equation, the material or chemical symbol present on the left-hand side of the right…

Q: 7. Calculate [Fe³*] in the solution prepared in step 12 of the procedure.

A: Since you have posted multiple questions as per guidelines we can solve only one per session . If…

Q: 66. The pink solution in the Erlenmeyer flask is due to the addition of pthalic anhydride…

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Q: Discuss the role of the following in the liquid-liquid extraction of dyes. A. Vinegar B. Baking…

A: Components are partitioned between an aqueous layer and the organic layer in the liquid-liquid…

Q: In the preparation of H2SO4 by Contact Process, why is SO3 not absorbed directly in water to form…

A: The reaction between sulfur trioxide and water is very highly exothermic.  The heat generated is so…

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 is the froth flotation method selected for the concentration of sulphide ores?

A: Froth floatation process: This process helps to remove gangue from sulphide ores. The principle…

Q: What is the role of cobalt glass for the flame test of potassium? Explain. Why was the flame test…

A: Hey, since there are multiple questions posted, we will answer first question. If you want any…

Q: 8) What are the roles of MnSO4 and NaN3 in the Dissolved Oxygen determination experiment?

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Q: How is lake test for aluminium ion based upon adsorption?

A: The lake test for aluminium ion is done based upon adsorption by litmus paper testing. Al2O3.nH2O…

Q: 7. The density of concentrated ammonia, which is 28.0% w/w NH3, is 0.899 g/m What volume of this…

A: Given,  Mass percentage of NH3 in initial solution = 28.0%  Density = 0.899 g/mL  Final volume = V2…

Q: Chemistry why cant 99% ethanol be obtained from aqueous ethanol by simple distilation? Can it be…

A: The mixture of ethanol and water forms an azeotropic mixture, which is also known as a constant…

Q: Copper matte is charged into a silica lined converter in extraction of copper. What is the role of…

A: Copper matte is the mixture of Cu2S and little amount of FeS.

Q: Preparation for the copper (1)chloride Does the colour of the CuCl remain the same if you leave it…

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Q: 7 determination of sodium, potassium and calcium in water samples by ICP-OES. 1. kindly assist me…

A: AIM - DETERMINATION OF SODIUM, POTASSIUM AND CALCIUM IN WATER SAMPLE BY ICP-OES . 1)What is ICP-OES?…

Q: How does the hydride generation method of sample introduction improve the sensitivity of some…

A: Hydride generation is an analytical technique that is very effective to separate hydride-forming…

Q: What is the purpose of adding concentrated sulfuric acid and heating the mixture?

A: Acid is substance which release hydrogen ions when dissolved in water.

Q: A 20.0 mL sample was analyzed using the Mohr method. Calculate the percent (w/v) CI (FM = 35.45) if…

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Q: What is the use of sodium bismuthate in the test for manganous ion?

A: This question is based on Analytical chemistry Ion to be identified : Manganous ion. Chemicals used…

Q: . What are some precautions that should be observed when collecting samples for DO determination, to…

A: 1. precautions are - a) It is extremely important to prevent contamination of the sample with…

Q: After completing Experiment# 2, a student determined that the total concentration of reducible…

A: Given that : The total concentration of reducible iodine = 0.01691 M The concentration of iodine in…

Q: 01: Find the weight of N22C204 (FW = 134.00 g/mol) required to prepare 250 mL of 0.1000 M Na2C204…

A: Given values are, Formula Weight = molar mass= 134.00 g/mol Volume of solution =250mL =0.250L And ,…

Q: In order to analyse mercury with AAS, which method will you prefer?

A: Explaination as below

Q: If MgSO4·nH2O(s) was heated strongly in this experiment, write a chemical equation which shows what…

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Q: Describe liquid-liquid extraction. Provide at least one application for liquid-liquid extraction in…

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

Q: What are the two reasons why sulfuric acid is added to a filtered solution produced after the…

A: The following two reasons of adding sulfuric acid to a filtered solution produced after the aluminum…

Q: A student weighed 2.0 g crude sample (impure) and found 0.3 g glass and recovered 0.7 g of the…

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Q: Provide three examples of Inorganic reactions that can be performed in a lab (include relevant links…

A: Inorganic reactions are those chemical reactions involving inorganic compounds. Inorganic compounds…

Q: 15. Discuss the effects of the pH and of the reagent concentration on the solvent extraction of…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Provide a short paragraph that relates the most essential elements of theory behind the Wittig…

A: Wittig reaction is used to prepare alkenes form carbonyl compounds specifically aldehydes and…

Q: Write four factors that will influence the adsorption capacity?

A: Adsorption is a surface phenomenon that occurs when a gas or liquid solute accumulates on the…

Q: What is the extraction method and purification method used in the isolation of Quinine?

A: It is an alkaloid of cinchona bark

Q: What is the element indicated by the residue formed in the charring test? 2. How do the…

A: Q.1 What is the element indicated by the residue formed in the charring test? Ans: Charring is a…

Q: Why do droplets of methyl salicylate form when this reaction is diluted with water?

A: We will synthesize aspirin by mixing salicylic acid with acetic anhydride. The second ester product…

Q: Synthesis of Orange II dye.

A: Orange II Synthesis a. Cool 10 mL of 10% NaOH in a 400 mL beaker. Add 1.8 g of 2-naphthol to this…

Q: How might the recovery of copper metal be affected if additional drops of sodium hydroxide were not…

A: Copper is a resource and an ingredient that is important to our daily lives. Because of its high…

Q: After completing Experiment#2, a student determined that the total concentration of reducible iodine…

A: Given data : The total concentration of reducible iodine = 0.01691 M The concentration of iodine in…

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: define vanderwaal adsorption.

A: The accumulation of molecules on the layer of molecules that is surface which is in contact with…

Q: one experiment involved the addition of magnesium metal to concentrated hydrochloric acid. 1. what…

A: When the hydrochloric acid is reacted with the magnesium, then it will result in a chemical change.

Q: In the event of an acid leak, what is the best technique to ensure that the acid is safe to handle?…

A: Acids are the substances that furnish proton in aqueous solution. These are corrosive in nature.

Q: What is the role of a depressant in Froth Floatation process for the concentration of a sulphide…

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