Question

(b) Explain the ring test for NO3​

Answer 1

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.

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Answer 2

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.

Explanation:

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