Its Flame Test:it gives golden yellow colour to non luminous flame which is not seen through a blue glass.
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A confirmatory test for sodium is the flame test. Sodium compounds can impart a yellow color to a flame, allowing for its identification.
The confirmatory test for oxalate is the alkaline permanganate test. In this test, a sample containing oxalate ions is treated with potassium permanganate in a basic solution. The formation of a pink color indicates the presence of oxalate ions.
The confirmatory test for casein involves performing a specific protein test, such as a Bradford assay, to detect the presence of casein. This test helps confirm the presence of casein in a sample, particularly in food products or biological samples.
Bright yellow :: This is the sodium ions. Any sodium compound will give a flame test colour of yellow/
Sodium carbonate is added to increase the pH of the solution.
The principle of the Sodium hypobromite test for urea is based on the reaction between urea and sodium hypobromite, which results in the formation of nitrogen gas. Urea is hydrolyzed to form ammonia and carbon dioxide, which react with sodium hypobromite to liberate nitrogen gas that can be detected by its characteristic effervescence. This test is used to detect the presence of urea in a sample.