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If 638.44 g CuSO4 reacts with 240.0 g NaOH which is the limiting reagent?
Sodium hydroxide is the limiting reagent.
What is the chemical formula for quantitative Benedict's reagent?
Benedict's reagent is an aqueous solution of copper (II) sulfate, sodium carbonate, sodium citrate dihydrate and 2,5-difluorotoluene.
What does the formula CuS04 sand for?
The formula CuSO4 stands for copper(II) sulfate, which is a chemical compound composed of copper, sulfur, and oxygen. It is commonly used in agriculture as a fungicide and in schools as a reagent for various chemistry experiments.
HCL CUSO4 equation?
The chemical equation for the reaction between hydrochloric acid (HCl) and copper (II) sulfate (CuSO4) is: 2 HCl + CuSO4 -> CuCl2 + H2SO4
Would albumin give a positive biuret test?
Hey. okay.. the biuret test is a test for peptide bonds. when CuSO4 is added to KOH, an alkaline solution, nitrogen atoms from the peptide bond forms a purple compound with the Cu2+ ions. hope this helps! read it in a text book.
What substance is used as a control in a Biuret test?
Biuret reagent is made up of sodium hydroxide and copper sulphate.
What are the conclusions from testing the Biuret reagent for protein?
The reagent used in the Biuret Test is a solution of copper sulfate (CuSO4) and potassium hydroxide (KOH). The KOH is there to raise the pH of the solution to alkaline levels; the crucial component is the copper (II) ion from the CuSO4. When peptide bonds are present in this alkaline solution, the copper (II) ions will form a coordination complex with four nitrogen atoms involved in peptide bonds. Copper Sulfate solution is a blue colour, but when the copper (II) ions are coordinated with the nitrogen atoms of these peptide bonds, the colour of the solution changes from blue to violet. This colour change is dependent on the number of peptide bonds in the solution, so the more protein, the more intense the change. When the peptides are very short, the solution turns a pink colour, rather than violet.
If 638.44 g CuSO4 reacts with 240.0 g NaOH which is the limiting reagent?
Sodium hydroxide is the limiting reagent.
How can you test for the presence of proteins?
Biuret Test for presence of proteins:Principle:The test indicates the presence of peptide linkages(CO-NH) in proteins. The CO-NH groups in polypeptide chain form complex colour compounds with cupric hydroxide (Cu(OH)2) which is formed by the action of NaOH on CuSO4 .Reagents:1) 40% Sodium hydroxide(NaOH)2) 1% Copper sulphate(CuSO4)Procedure:In 3mL of sample solution add 3mL of 40% NaOH. To This mixture add few drops of 1% CuSO4 .Observation:Purple Violet or Pink colour develops.Inference:(CO-NH) linkages are present.
Why should excess cuso4 not be used in biuret test?
the color of the salt prevents the recognition of the color produced in the reaction. The presence of ammonium salts interferes with the test hope usefull :D source: Experimental Organic Chemistry - James F. Norris, Ph.D. in chapter 26
What is the function of acidified cuso4?
Acidified CuSO4 is used as a reagent in the Fehling's test to detect the presence of reducing sugars in a solution. When a reducing sugar is present, it reduces the blue Cu2+ ions in the CuSO4 solution to red-brown Cu2O precipitate, indicating a positive result.
What is the chemical formula for quantitative Benedict's reagent?
Benedict's reagent is an aqueous solution of copper (II) sulfate, sodium carbonate, sodium citrate dihydrate and 2,5-difluorotoluene.
What does the formula CuS04 sand for?
The formula CuSO4 stands for copper(II) sulfate, which is a chemical compound composed of copper, sulfur, and oxygen. It is commonly used in agriculture as a fungicide and in schools as a reagent for various chemistry experiments.
HCL CUSO4 equation?
The chemical equation for the reaction between hydrochloric acid (HCl) and copper (II) sulfate (CuSO4) is: 2 HCl + CuSO4 -> CuCl2 + H2SO4
Would albumin give a positive biuret test?
Hey. okay.. the biuret test is a test for peptide bonds. when CuSO4 is added to KOH, an alkaline solution, nitrogen atoms from the peptide bond forms a purple compound with the Cu2+ ions. hope this helps! read it in a text book.
What is formed when cuso4 n naoh are used for protein test?
When CuSO4 and NaOH are used for the protein test (Biuret test), the formation of a purple-colored complex indicates the presence of proteins. This color change occurs due to the interaction of the copper ions in CuSO4 with the peptide bonds in proteins, leading to the formation of a coordination complex that absorbs light in the visible range.
What compound is represented in this formula CuSO4?
Copper (II) sulfate is represented by the formula CuSO4. It is a chemical compound made up of one copper ion (Cu2+) and one sulfate ion (SO42-). Copper sulfate is commonly used in agriculture as a fungicide and in chemistry as a reagent for various reactions.
