Question

explain the ring test for no3-​

Answer 1

Answer:

A common nitrate test, known as the brown ring test can be performed by adding iron(II) sulfate to a solution of a nitrate, then slowly adding concentrated sulfuric acid such that the acid forms a layer below the aqueous solution... This test is sensitive up to 2.5 micrograms and a concentration of 1 in 25,000 parts.