1.

In organic layer test, CS_(2) or C CI_(4) is added to Lassaigne's extract and then Cl_(2) water or KMnO_(4) is added. This test is used to distinguish between

Answer»

`BR^(-)` and `I^(-)`
`Cl^(-)` and `Br^(-)`
`Cl^(-)` and `I^(-)`
`Cl^(-), Br^(-)` and `I^(-)`

Solution :Appearance of ORANGE colour in organic layer confirms the presence of Br while violet color confirms iodine
`2Br^(-)+Cl_(2) to underset("orange")(Br_(2))+2Cl^(-)`
`2I^(-)+Cl_(2) to underset("(violet)")(I_(2))+2Cl^(-)`
`16H^(o+)+2MnO_(4)^(-)+10Br^(-) to 5Br_(2)+2Mn^(2+)+8H_(2)O`
`16H^(o+)+2MnO_(4)^(-)+10I^(-) to 5I_(2)+2Mn^(2+)+8H_(2)O`
Here `Cl_(2)` (or) `KMnO_(4)` works as oxidizing AGENT


Discussion

No Comment Found

Related InterviewSolutions