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Why does the amino acid phenylalanine give a yellow color with concentrated nitric acid?
Phenylalanine gives a yellow color with concentrated nitric acid due to the formation of nitrophenylalanine derivatives. The concentrated nitric acid nitrates the phenylalanine, leading to the production of nitro groups that impart a yellow hue to the solution. This reaction is part of a broader class of chemical reactions involving amino acids and nitrous compounds, highlighting the interaction between amino acid side chains and strong acids.
What is the acid that reacts with copper 2 carbonate to give a blue solution?
The acid that reacts with copper(II) carbonate to give a blue solution is hydrochloric acid (HCl). This reaction forms a solution of copper(II) chloride, which appears blue due to the presence of copper ions.
Does adding water change the pH of an acid?
Yes it does. pH is defined as the -log of the concentration of hydrogen ions in a solution, or -log[H+]. As you add water to an acid, you are diluting it, thus lowering the concentration of H+. Putting a lower value in for [H+] in the equation -log[H+] will give you a great value than you originally had. This means the pH has increased, making the solution more basic.
What indicator in titration of sodium carbonate solution against hydrochloric acid would give a complete neutralization?
The indicator methyl orange can be used in the titration of sodium carbonate solution against hydrochloric acid to give a complete neutralization. At the endpoint, when all the carbonate ions have reacted to form bicarbonate ions, the solution will turn from yellow to pink.
Give an example of an diprotic acid?
The most common diprotic acid is sulphuric acid; H2SO4(aq) as this has 2 H+ to donate.
Does diluting an alkali give a more concentrated solution?
No, diluting an alkali solution will actually result in a less concentrated solution. Dilution involves adding more solvent, which decreases the concentration of the solute (in this case, the alkali) in the solution.
Why does the amino acid phenylalanine give a yellow color with concentrated nitric acid?
Phenylalanine gives a yellow color with concentrated nitric acid due to the formation of nitrophenylalanine derivatives. The concentrated nitric acid nitrates the phenylalanine, leading to the production of nitro groups that impart a yellow hue to the solution. This reaction is part of a broader class of chemical reactions involving amino acids and nitrous compounds, highlighting the interaction between amino acid side chains and strong acids.
What is the difference between a dilute solution of nitric acid and a concentrated one?
The difference is gradual, but not sharply drawn:Diluted means (more) lower concentration, in laboratory practice less than 1.0 M (
How you are going to prepare a solutin containing 3 percent acetic acid and 97 percent water?
Measuring 3ml of Glacial Acetic Acid in a 100ml volumetric flask and diluting the same with water upto the 100ml mark will give exactly 3% solution of Acetic Acid containing 97% water...thats all, thank you
Why give an isotonic solution?
When comparing solutions, those that have the same concentration are isotonic. One that is more concentrated is hypertonic; less concentrated is hypotonic.
Why Should phenylalanine give a yellow Color with concentrated nitric acid?
Phenylalanine gives a yellow color with concentrated nitric acid due to the formation of a nitro derivative. Nitric acid reacts with the aromatic ring of phenylalanine, leading to the formation of a yellow compound.
How much pure acid should be mixed with 6 gallons of a 50 percent acid solution in order to get an 80 percent acid solution?
50% acid in a 6 gallon solution means that 3 gallons are acid. 9 gallons more acid will give you a total of 12 gallons of acid in a 15 gallon solution. 12 is 80% of 15.
What is affect of formic acid dilute with water?
Chloride ion interfere in the chemical oxygen demand experiment a lot. So in the presence of HCl give a wrong COD value. To reduce the interference of chloride ion we add mercuric salt in the solution.
What ion dissolved in sulphuric acid to give a colourless gas and blue solution?
Copper ions dissolved in sulfuric acid react to give a colorless gas (sulfur dioxide) and a blue solution (copper sulfate).
What is the acid that reacts with copper 2 carbonate to give a blue solution?
The acid that reacts with copper(II) carbonate to give a blue solution is hydrochloric acid (HCl). This reaction forms a solution of copper(II) chloride, which appears blue due to the presence of copper ions.
Is glacial acetic acid soluble in sodium hydroxide?
Glacial acetic acid reacts with sodium hydroxide to give sodium acetate and water CH3COOH + NaOH = CH3COONa + H2O
How prepare 0.1 N HCL?
To prepare 0.1 N HCl solution, dilute 1 volume of concentrated hydrochloric acid (approximately 37% HCl) with 9 volumes of water (distilled or deionized). This will give you a 0.1 N (normal) solution of HCl. Always remember to add acid to water slowly and with good mixing to prevent splattering and to avoid generating excessive heat.
