Nitrite test

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A nitrite test is a chemical test used to determine the presence of nitrite ion in solution.

A common nitrite test can be performed by adding iron(II) sulfate to the solution, then slowly adding acetic acid (NOT nitrous acid, for obvious reasons) and watching for a brown ring on the test tube, which will indicate the presence of the nitrite ion.[1]

See also


  1. Mascetta, Joseph A. Barron's How to Prepare for the SAT II: Chemistry, 7th edition. Barron's Educational Series, Inc., 2002. p208.