Chemistry - PRACTICAL ORGANIC CHEMISTRY Question with Solution | TestHub

Organic compound is heated with fuming nitric acid in the presence of silver nitrate in carius method. Lunar caustic ( ${\mathrm{AgNO}}_3$ ) is used as reagent hare to distinguish ${\mathrm{Cl}}^{-},\mathrm{Br}$ and ${\mathrm{I}}^{-}$respectively as follows.

${\mathrm{Cl}}^{-}(\mathrm{aq})\stackrel{{\mathrm{AgNO}}_3}{\to }\mathrm{AgCl}{\downarrow }_{\text{ppt }}$ white

${\mathrm{Br}}^{-}(\mathrm{aq})\stackrel{{\mathrm{AgNO}}_3}{\to }\mathrm{AgBr}{\downarrow }_{\text{ppt }}$ pale yellow

${\mathrm{I}}^{-}(\mathrm{aq})\stackrel{{\mathrm{AgNO}}_3}{\to }\mathrm{AgI}{\downarrow }_{\text{ppt }}$ Dark yellow