1.

Write theh chemical reaction associated withthe ''brown ring test''

Answer»

Solution :Brown ringtestis donefor the DETECTIONOF nityrate .To a solutioncomtainingthe SALT and fresbilyprepared ferric solutionsalphideconcetratedsulphiruicacidisaddedgraduallyalongth ea sides of thetube .Abrown appears to the junctionof the twoliquid .
`NO_(3)^(Theta) + 3Fe^(2+) RARR NO + 3Fe^(2+) + 2H_(2)O`
`[Fe(H_(2)O)_(6)]^(2+) +NO rarr underset("Brown")([Fe(H_(2)O)_(5)NO]^(2+))+H_(2)O`


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