Examples of using Dichromate in English and their translations into Serbian
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Colloquial
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Ecclesiastic
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Computer
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Latin
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Cyrillic
Its reaction with potassium dichromate follows the equation.
Potassium dichromate is a strong oxidizing agent under acidic conditions.
If you distinguish only two colors,then you will be called dichromate.
Nine sights potassium dichromate is a potentially toxic compound, it can cause renal failure.
This is what happens when concentrated sulfuric acid is added to a dichromate solution.
Dichromate, the oxidizing agent for COD determination, does not oxidize ammonia into nitrate, so nitrification is not included in the standard COD test.
Other hexavalent chromium compounds are chromium trioxide andvarious salts of chromate and dichromate.
Once oxidation is complete, the amount of excess potassium dichromate must be measured to ensure that the amount of Cr3+ can be determined with accuracy.
The amount of ferrous ammonium sulfate added is equivalent to the amount of excess potassium dichromate added to the original sample.
To do so,the excess potassium dichromate is titrated with ferrous ammonium sulfate(FAS) until all of the excess oxidizing agent has been reduced to Cr3+.
He mixed up his aniline with sulphuric acid andalso a substance called potassium dichromate which is a sort of chemical mixer.
However, dichromate, and the more achromatic are extremely rare and are usually present in this case and other serious visual impairment, blindness, only one of them.
Since then, other oxidizing agents such as ceric sulphate,potassium iodate, and potassium dichromate have been used to determine COD.
At first the colour changes from orange(dichromate) to red(chromic acid) and then deep red crystals of chromium trioxide precipitate from the mixture, without further colour change.
A further complication is that the ion[HCrO4]- has a marked tendency to dimerize, with the loss of a water molecule,to form the dichromate ion,[Cr2O7]2-.
It is oxidized to carbon dioxide andacetic acid using potassium dichromate and sulfuric acid, while alkaline potassium permanganate oxidizes it to carbon dioxide.
A further complication is that the ion- has a marked tendency to dimerize, with the loss of a water molecule,to form the dichromate ion, 2-: 2-⇌ 2-+ H2O log KD= 2.05.
Of these, potassium dichromate(K2Cr2O7) has been shown to be the most effective: it is relatively cheap, easy to purify, and is able to nearly completely oxidize almost all organic compounds.
Note: Ferroin indicator is bright red from commercially prepared sources, butwhen added to a digested sample containing potassium dichromate it exhibits a green hue.
In the process of oxidizing the organic substances found in the water sample,potassium dichromate is reduced(since in all redox reactions, one reagent is oxidized and the other is reduced), forming Cr3+.
In this case,excess dichromate will further oxidize the aldehyde to a carboxylic acid, so either the aldehyde is distilled out as it forms(if volatile) or milder reagents such as PCC are used.+ CH3(CH2)9OH→ CH3(CH2)8CHO+ H2O Oxidation of primary alcohols to form aldehydes can be achieved under milder, chromium-free conditions by employing methods or reagents such as IBX acid, Dess-Martin periodinane, Swern oxidation, TEMPO, or the Oppenauer oxidation.
Further, based on Pasteur's notes released manyyears after his death, he appears to have used Toussaint's method(using potassium dichromate) to develop“his” vaccine used in his famous Pouilly-le-Fort demonstration.
The Durres plant was used to produce sodium dichromate for the leather industry as well as pesticides-- including lindane, an invisible nerve poison with a pungent smell that has been banned in Europe for a decade.