how do you account for the formation of precipitates in test for purines ?

Q: Write the chemical equation for the reaction between phenol and ferric chloride solution.

A: Phenol reacts with ferric chloride in order to yield ferric phenoxide complex which has a violet…

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

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Q: Describe how the purity of the prepared aspirin was evaluated from the results of the ferric…

A: To describe (a) how the purity of the prepared aspirin was evaluated from the results of the ferric…

Q: One of the steps in the preparation of Calamine lotion is by grinding or rubbing the active…

A: One of the steps in the preparation of Calamine lotion is by grinding or rubbing the active…

Q: 1. In part A, a solid precipitate is formed on adding sulfuric acid to p-aminobenzoic acid. What…

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

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Q: Write an equation for the reaction that occurs when aqueoushydroiodic acid is mixed with aqueous…

A: A balanced chemical equation is defined as the equation where equal numbers of total individual…

Q: explain the principles of stoichiometry in the manufacture of benzoic acid

A: The basic principle of stoichiometry works on the law of conservation of mass in a chemical…

Q: What is the balanced equation for the reaction of Ethyl 4-aminobenzoate with 6.0 M NaOH? Will this…

A: The structure of the Ethyl 4-aminobenzoate is as follows: The compound contains an ester functional…

Q: What is the expected visual observation when ether and hot, acidic potassium permanganate were mixed…

A: acidic potassium permangnate is an strong oxidizing agent.

Q: how to Distinguish AgNO3 from Ba(NO3)2 and how to distinguish NaCl from NaI if they were in a test…

A: The given set of compounds can be distinguished by using a certain reagent that will form a…

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: Ignore inorganic byproducts and the phthalhydrazide side-product. :N: K Br of +

A: ->phthalimide used for the formation of amine.

Q: Preparation of Benzocaine 1. Observed that a solid precipitate is formed upon addition sulphuric…

A: Benzocaine is ethyl p-aminobenzoate and it is an anesthetic. It is used for temporary relief from…

Q: What is deliquescent salt?

A: Deliquescent salts have tendency to dissolve in the absorbed moisture and form their own solution.

Q: 100 mg of anhydrous powder of lysine is not completely soluble in 10 mL of water but dissolves…

A: Lysine is an amino acid that has a side chain at neutral pH. Its structure is shown as follows:

Q: 1) Describe the color and appearance changed you observed when you dissolved NiSO4 · 6H2O in…

A: As per rule only the first question (Question 1)  can be answered and an explanation will also be…

Q: What would be the effect of a more dilute solution of NaOH on the titration?

A: In the titration process , the titrant is added slowly to the unknown solution . When we dilute the…

Q: A very dilute solution of CuSO4 is used in the Biuret test.  Why?

A: Biuret test is a test performed for the determination of presence of peptide bond in a compound. A…

Q: Draw/illustrate the chemical reaction involved in Benedict’s test and explain the purpose of this…

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Q: Write the balanced chemical equation for the dissolution of the alum in water and the balanced…

A: The dissolution of any kind of salt leads to the formation of an aqueous solution of its constituent…

Q: What is the melting point of Penguinone and how is it extracted?

A: Please find your solution below : Penguinone is an organic compound. Its IUPAC name is…

Q: on 38 out of phenolphthalein methyl red phenol red chlorophenol red 9 yellow Select one: O barium O…

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Q: 9) What will be the color and structure of methyl orange and phenolphthalein in highly acidic water…

A: The following  indicators shows colour in acidic medium are as follow.

Q: write an equation to show the congruent dissolution of anhydrite

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Q: Successfully establishing the scientific concept involved when synthesizing an Iron(II) oxalate…

A: Iron(II) oxalate dihydrate It is a simple salt formed by reaction of ferrous hydroxide {Fe(OH2)}…

Q: give the pH values at the end point of: i.bomocresol green ii.red phenol iii.phenophthalein in…

A: Interpretation -  To give the pH value at the end point of - Bromo cresol green Red phenol…

Q: Compute the amount of reagents which will be used for the preparation of the following reagents. a.…

A: The given data contains, Molarity = 0.1 M Volume = 500 ml =0.500 L

Q: A solution turns blue when treated with bromocresol green, colorless when tested with…

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Q: Why is the precipitate washed with hot water after separating out Pb2+?  What is the purpose of the…

A: So this is a test for Pb2+ and finally it involves the precipitate of PbCl2. PbCl2 is not soluble in…

Q: What forms from the substance of mixed with chloroform with a presence of KOH

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Q: Give equations to show the reactions of sodium stearate with the following.(a) Ca2+ (b) Mg2+ (c)…

A: Sodium stearate is a stearic acid salt of sodium. It is commonly used in soaps and detergents. It is…

Q: K2Cr207 + 7H2C204 · 2H20 2K[Cr(C204)2(H20)2] · 2H20 + 6CO2 + 13H20 What is role of oxalic acid in…

A: A question based on redox reaction,which is to be accomplished.

Q: How can the tetraborohydrate ion be prepared?

A: Sodium tetraborohydrate can be produced using borax, sodium, hydrogen and silicon oxide. The…

Q: What will be the aluminium oxide ( Al;O; ) content of your preparation per 5ml Al2O3 content of the…

A: The question is based on the concept of solutions. We have to identify the content of alumina in 5…

Q: 205g PBr2 dissolved in 12.5g H2O is considered to be

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Q: What is the purpose of using the following solutions in the titration of ascorbic acid in the peach…

A: According to the question we need to discuss the purpose of using the following solutions in the…

Q: KMn Oy + Ethe

A: This is unsaturated test performed  to know the unsaturated in molecule  . Also called Bayer  test .

Q: Describe the preparation and storage of each reagents. d. 2 L of 0.1 M NaOH e. 1.5 L of 0.04 M…

A: Molarity is the no. of moles of solute present per litre of the solution and it is represented by M.…

Q: What was the purpose of performing titration analysis on the product synthesized in relation to the…

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Q: 1. What are possible qualitative chemical tests that can be used in identifying aspirin in the…

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

Q: Which species is responsible for the formation of red color of red cabbage anthocyanin extract…

A: Please find your solution below : Red cabbage is used as an indicator to test whether the substances…

Q: 11. 1) Zn(Hg), HCI Ph 2) NBS, UV light (1 equivalent)

A: Please note- As per our company guidelines we are supposed to answer only one question. Kindly…

Q: Why does zinc hydroxide dissolved in excess sodium hydroxide?

A: Given Compound =Zinc HydroxideChemical formula = Zn(OH)2 Condition = Excess of sodium hydroxide

Q: What is the complete balanced equation and then the Keq expression for the following: 1.…

A: Answer: Since, Mg is more reactive metal then hydrogen, therefore it will displace, hydrogen from…

Q: How to get potassium hydroxide from potassium iodide? Give a detailed explanation of the methods…

A: Interpretation- Give the explanation of method used in the process of sepration that how to get…