Q: 3. When separating hexanes and heptane (both organic liquids), which would be the most suitable…
A: Distillation is a technique in which the mixture of liquid can be separated. The distillation…
Q: Discuss the importance of the major steps in the aspirin synthesis, melting point determination, and…
A: Interpretation: Aspirin is a painkiller which can be synthesized when salicylic acid reacted with…
Q: The white solid that remains in the centrifuge tube after acetone extraction fizzes when…
A:
Q: The storage bottle should be a dark or AMBER-colored reagent bottle
A:
Q: Which procedure would give you the diluted solution of HNO3 with a concentration of 0.200 M?
A: The molarity of a solution is given by:
Q: What is the method of separation or chemical reaction of a 500 g calcium polysulphide and a 1.5 kg…
A: Answer - According to the question - Given - Calcium polysulfide (CaS5) is also Anti-Infective…
Q: Explain a method for titration of HNO3-H2SO4 mixtures ?
A: A mixture of concentrated nitric acid and sulfuric acid find its usage in numerous chemical…
Q: 1. In part A, a solid precipitate is formed on adding sulfuric acid to p-aminobenzoic acid. What…
A:
Q: Describe how you would prepare the following solutions: 2 L of 4% (v/v) acetic acid (CH3COOH) using…
A:
Q: a 0.258 g sample of a powder containing some ascorbic acid required 14.50 mL of 0.100 M NaOH for…
A: Given, Mass of the sample containing ascorbic acid = 0.258 g Molarity of NaOH = 0.100 M = 0.100…
Q: A solution contains formic and tartaric acids. A 25.00 mL aliquot portion is treated with 50.00 mL…
A: The reactions which take place in the titration of tartaric acid and formic acid are as follows:…
Q: Explain why different results are observed when HCl and H2SO4 are added to brine?
A: The different results are observed when HCl and H2SO4 are added to brine because in HCl, due to…
Q: The compounds you are separating are; Cholesterol/cholesterol acetate on a silica gel the solvent is…
A: Thin-layered chromatography or gas chromatography system employed which allows a complete separation…
Q: Fehling reagent I is prepared by dissolving 138.6 g of CuSO4·5H2O in 2 L H2O. The molecular weight…
A:
Q: What is the reducing and oxidizing agent in the formation of potassium trioxalatoferrate(III)…
A: Dear student, we'll answer the first question since the exact one wasn't specified. Please submit a…
Q: B. What would be the volume of 0.02N H2SO4 needed to titrate 100 ml of paregoric if the sample…
A:
Q: What is the relative supersaturation of Ag2S04 if its concentration at a given instant is 0.0750 M…
A: The relative supersaturation of a slat is calculated using the following formula: RS =…
Q: how do you account for the formation of precipitates in test for purines ?
A: Purines is heterocyclic aromatic compound that consist of two rings with nitrogen atoms.
Q: Give the detailed step-by-step procedure for the preparation of 20 mL of 0.0005 M KOH
A: GivenMolarity of KOH solution = 0.0005 MVolume of Solution = 20 mLMolar mass of KOH =56.1 g/mole
Q: Discuss the significance of the following processes and what constituent is being determined: a.…
A: The significance of the processes and presences of constituent is given below.
Q: describe the preparation of 4L of 0.250M HCLO4, starting with an 8M solution of the reagent.
A:
Q: How do I create a detailed separations flowchart of the isolation process of caffeine from soda? The…
A: One of the separation processes that is used to isolate a particular compound from mixture or a…
Q: How to prepare 0.10M of sodium thiosulphate
A: Given that molarity of sodium thiosulphate (Na2S2O3)is 0.10 M Molar mass of Na2S2O3 is 158.11 g/mol
Q: Illustrate the chemical reaction on the use of sodium bicarbonate in the purification of isoamyl…
A: Isoamyl acetate (or isopentyl acetate) is prepared by Fischer esterification of acetic acid…
Q: on 38 out of phenolphthalein methyl red phenol red chlorophenol red 9 yellow Select one: O barium O…
A:
Q: What was the solvent used in the preparation of the standard stock solutions? Water Methanol Mobile…
A: methanol
Q: What is the purpose of performing a blank titration in the assay of ibuprofen? A. To determine…
A:
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: Why is the collection done through a 10% Na,CO, solution? Remove traces of acids or neutralizes the…
A: The alcohol functional group in a molecule is observed by the presence of -OH group. For example,…
Q: 12. In IR analysis, solid samples are prepared in KBr pallet O O Thin film O Nujol Mull Organic…
A:
Q: Question 1 Which compound are held by stationary phase ? O O Polar compound Non polar compound A and…
A:
Q: Use the following atomic masses (in g/mol): Mg = 24.31; H = 1; S = 32.06; O = 16; Na = 23; Cl = 35.…
A: Answer: MgO is the oxide of alkaline earth metal, therefore it is a basic oxide which on dissolving…
Q: 2) If nickel(II) sulfate is heated too strongly, the following reaction will occur NISO4(6)NiO(6) +…
A: The chemical reaction involved: NiSO4(S)---> NiO(s) + SO3(g).Overheating of…
Q: Explain what happened to the salt (the inorganic impurity) during the extraction process. Where does…
A: In solvent extraction we use two immiscible liquids (generally water and an organic solvent)for…
Q: Describe how you would prepare the following solutions: 2 L of 4% (v/v) acetic acid (CH3COOH) using…
A: 2 L of 4% (v/v) acetic acid (CH3COOH) using glacial (or undiluted) acetic acid
Q: Calculate the molecular weight of sulfur if 35.5 grams of sulfur dissolve in 100.0 grams of CS2 to…
A: Given: Mass of sulfur=35.5g Mass of CS2 = 100g Boiling point of the solution is 49.48°C To find: The…
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: why is there bubbles formed when aniline was added to concentrated HCl?
A: Aniline is basic in nature and HCl is an acid. So, acid-base reaction will take place.
Q: give 2 tests to identify the presence of methyl orange
A: Methyl orange shows different colours in acid, base and neutral substance. It changes colour from…
Q: Calculate the molecular weight of sulfur if 35.5 grams of sulfur dissolve in 100.0 grams of CS2 to…
A: given mass of CS2 = 35.5 g boiling point = 49.48 °C
Q: What should I use as a balanced equation for the combination of Cream of Tartar and sodium carbonate…
A: If both side number of each atom is same, then equation is balanced.
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: Why is the percentage of acetic acid in date vinegar more than apple cider vinegar?
A: Both vinegars are produced by fermentation. in the formation of date vinegar, the sugar is converted…
Q: Why is the sulfide and the ferricyanide must not be mixed together?
A:
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: ORANGE II SYNTHESIS Describe the recrystallization process of the Orange II dye in 95% ethanol.…
A: Once we get the solid crude of the orange II dye. We need to recrystallise it in order to remove the…
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…
A very dilute solution of CuSO4 is used in the Biuret test. Why?
Step by step
Solved in 2 steps
- PLEASE ANSWER A. A very dilute solution of CuSO4 is used in the Biuret test. Why?how do you account for the formation of precipitates in test for purines ?8. Paraform precipitate is formed in formaldehyde solution when stored at a temperature: A) Below + 18 ° С B) Above + 18 ° С C) Above + 9 ° C. D) Below + 9 ° C.
- How to get potassium hydroxide from potassium iodide? Give a detailed explanation of the methods used in the process of separation.Calculate the volume of concentrated reagent required to prepare the dilutedsolutions indicated:a. 15 M NH3 to prepare 50 mL of 6.0 M NH3b. 18 M H2SO4 to prepare 250 mL of 10.0 M H2SO4What is the method of separation or chemical reaction of a 500 g calcium polysulphide and a 1.5 kg hydrochloric acid? Kindly explain.
- What is the complete balanced equation and then the Keq expression for the following: 1. Substitution reaction of magnesium strips on the 6M nitric acid:1.00 mL of a 3.55x10^-4 M solution of oleic acid is diluted with 9.00 mL of petroleum ether, forming solution A. Then 2.00 mL of solution A is diluted with 8.00 mL of petroleum ether, forming solution B. What is the concentration of solution B?Why would buffered solution tests be compared to distilled water?
- Describe the prepartion of 4.00L of 0.175 HClO4,starting with an 8.00M solution reagent.1. During fractional distillation, why must we kept the distillate at cool/ low temperature?In the preparation of a standard stock solution for protein analysis, 50 mg of bovine serum albumin (BSA) was dissolved in deionized distilled water to a final volume of 00 mL. What is the weight of BSA in 0.60 mL stock solution?