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in picric acid we cannot used direct nitration because of the phenol is very sensitive in oxidation of nitrate, to overcome this problem, we used a sulfuric acid added to phenol before the nitric acid. the reaction between NO2 and SO2 are reversible so the sulphate exchange with nitrate becoming tri nitrophenol
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Why is sulfuric acid used in aromatic nitration?
To form an active electrophile NO2+
Reactant used to synthesize nitrobenzene?
benzene,as it can undergo nitration to give nitrobenzene
If you look at the label on a bottle of acid how can you tell the acid is concentrated or not?
It totally depends on whether the acid is in the original container or not. By law any manufacturer of a chemical substance is required to put on the label what the concentration of a substance is and can sometimes be a percentage based on the specific gravity of the different elements of the solution (by weight) or can be based on the volume percentages of the acid and its solvents. Some containers will show both methods. Most acids, including Hydrochloric (also known as muriatic acid or HCl) used in the manufacture of methamphetamine, Sulfuric acid (H2SO4) used as battery acid, and Nitric acid (HNO3) also called aqua fortis and spirit of niter. Nitric acid is used mainly as a reagent for nitration and is also used in thermally sensitive explosives. It is also a strong oxidizing agent. If you are not sure of the strength, especially if it's in a container that's not marked then you could do a titration on a small amount of it by chemical reaction and determine the results by the compounds created in the reaction of the small amount.
Can tartaric acid be used instead of citric acid?
Possible, but it depends on what the acid is used for.
What can a sulfuric acid do and what is it used for?
Sulphuric acid is used in the manufacture of fertilisers (superphosphates) and as a battery acid.
Why was picric used in treating burns?
i truelywanna know why was picric acid used to treat burns?
Why are picric acid used in the treatment of burns?
Picric acid reduced pain and infection and allowed the formation of a scab under which healing took place.Using a one percent solution of picric acid, the wound was cleansed and then all blisters were pricked to release the serum (blister fluid), taking care not to remove the blister itself. The burn was covered with sterilized gauze soaked in the picric acid solution. The gauze was padded with cotton wool and held in place with a light bandage. After three or four days, the dressing was soaked off and the wound redressed.
Why is sulfuric acid used in aromatic nitration?
To form an active electrophile NO2+
Picric acid test?
In microbiology, microbial pathology and taxonomy:A variety of phenotypic tests can be used to identify and distinguish Mycobacteria strains and species from each other, one of them is thePicrate tolerance test: Ability to grow on Sauton agar containing picric acid (0.2% w/v) after 3 weeks
What are the results when vasopressin is tested with xanthoproteic?
xanthoproteic test is used to detect the presence of aromatic amino acid in this nitration of an benzee ring with nitric acid takes place.
How do you prepare hager reagent?
It is the Saturated solution of Picric Acid and is used to test the presence of alkaloids. Alkaloids give yellow ppt. with Hager's reagent.
What is the reaction of benzene with HCl?
Nitration: H2SO4 C6H6 + HONO2 ---------> C6H5NO2 + H2O Nitric Acid Nitrobenzene Nitration: H2SO4 C6H6 + HONO2 ---------> C6H5NO2 + H2O Nitric Acid Nitrobenzene Nitration: .................H2SO4 C6H6 + HONO2 ---------> C6H5NO2 + H2O .....Nitric Acid ......Nitrobenzene
What replaced picric acid for treating burns?
If you are looking for something to replace picric acid. There is a white cream that you can buy to put on burns. It helps to take the sting out of the burned area. It also helps to protect against infections. The white cream you are looking for is called Flamazine. It works really well, I have used it my self and it worked for me. It will also help to minimize the amount of scaring if it is a really bad burn. And when I used it, it starts working as soon as I put it on. I just can remember if I got it over the counter or not. I hope this helps you out. I'm dying to know
Reactant used to synthesize nitrobenzene?
benzene,as it can undergo nitration to give nitrobenzene
Why picric acid and tannic acids are used in the treatment of burns?
Picric Acid: 1. In the First World War the treatment of burns consisted in the application of various antiseptic dressings. Picric acid in a 1 per cent aqueous solution was commonly used. 2. The treatment by picric acid carried with it some danger of absorption when used over large raw surfaces, but it was generally a very satisfactory form of treatment. 3. It controled pain and rapidly promoted healing. Tannic acid: 1. The use of tannic acid was a distinct advance in the treatment of cutaneous burns and found the care of patients relatively simple. 2. Beneficial effects: rapid alleviation of pain, lessened infection, reduced local loss of body fluids, prosperous epithelization, relative absence of contractures, and diminished scar-tissue formation. 3. Most important of all, good survival statistics were reported in several studies. In a group of 114 patients treated with tannic acid, Beekman observed a mortality rate of 14.9 percent, which was considerably lower than the death rate of 27.8 percent in the 320 patients treated otherwise. He also showed that the number of patients dying from the second to the tenth day, the period of toxemia, was strongly decreased in the tannic acid-treated group.
What is the technique used to alter one amino acid in protein?
site-direct mutagenesis
What are the principle of Esbach reagent?
Esbach reagent is used to detect albumin in urine. The picric and citric acids forms a precipitate with albumin.
