Question

what is the name of the brown ring compound in the brown ring test??

Answer 1

It is a compound named Pentaaquo nitroso Iron(II) sulphate with the chemical formula [Fe(NO)(H2O)5]SO4.

Answer 2

Answer:

The formula for the brown ring complex compound is $[Fe (H_{2} O)_{5 } NO]SO_{4} .$

It's a chemical called Pentaaquo nitroso Iron(II) sulphate.  

Explanation:

The brown ring test is a chemical test used to determine the presence of nitrate ions in a sample. It is also referred to as the nitrate test. It is a typical qualitative test used to establish the presence of nitrate ions in any solution that results in the creation of a brown-coloured ring. The addition of ferrous sulphate to the supplied solution, which contains nitrate ions, results in the formation of a brown ring, which is further acidified by the addition of strong sulphuric acid to the entire mixture. A brown ring is typically generated at the interface of sulphuric acid and ferrous sulphate. This ring indicates that nitrates are present in the supplied solution. It's a reduction reaction.