MCQ
In Carius method, halogen containing organic compound is heated with fuming nitric acid in the presence of :
- ✓$\mathrm{AgNO}_{3}$
- B$\mathrm{HNO}_{3}$
- C$\mathrm{BaSO}_{4}$
- D$\mathrm{CuSO}_{4}$
✓
Answer
Correct option: A.
$\mathrm{AgNO}_{3}$
a
Organic compound is heated with fuming nitric acid in the presence of silver nitrate in carius method.
Organic compound is heated with fuming nitric acid in the presence of silver nitrate in carius method.
Lunar caustic $\left(\mathrm{AgNO}_{3}\right)$ is used as reagent hare to distinguish $\mathrm{Cl}^{-}, \mathrm{Br}$ and $\mathrm{I}^{-}$respectively as follows.
$\mathrm{Cl}^{-}(\mathrm{aq}) \stackrel{\mathrm{AgNO}_{3}}{\longrightarrow} \mathrm{AgCl} \downarrow_{\mathrm{ppt}}$ white
$\mathrm{Br}^{-}(\mathrm{aq})\stackrel{\mathrm{AgNO}_{3}}{\longrightarrow} \mathrm{AgBr} \downarrow_{\mathrm{ppt}} \mathrm{pale}$ yellow
$\mathrm{I}^{-}(\mathrm{aq}) \stackrel{\mathrm{AgNO}_{3}}{\longrightarrow} \mathrm{AgNO}_{3} \mathrm{AgI} \downarrow_{\mathrm{ppt}}$ Dark yellow
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