a. While testing oxalate, gas obtained burns with a blue flame intially but is put off instantly even as gas appears coming. Explain.
b. `I^(Theta)` also interfere in the 'Ring Test' of `NO_(3)^(Theta)` suggest a chemical reagent that removed `I^(Theta)`

Explanation

`AgI lt AgBr lt AgCI lt AgF`
b. Boll the mixture `NH_(4)O_(2)^(Theta)` is decomposed as `N_(2)`
`NaNO_(2) + NH_(4)CI overset(Delta) to NaCI + N_(2) uarr + 2H_(2)O`
c. `H_(2) C_(2)O_(4) overset(Delta) to H_(2)O_((1)) + CO_(2(g))`
d. `HgCI_(2)` removes `I^(Theta)`as `HgI_(2)`
`HgCI_(2) + 2I^(Theta) rarr underset("Orange ppt")(HgI_(2) uarr + 2CI^(Theta)) `
e. (A) `NH_(4)CI (B): HCI (C ): NH_(3)`
f. Reducin g power `I^(Theta) gt Br^(Theta) gt CI^(Theta) gt F^(Theta)` Add `CI_(2)` and `CHCI_(3)` into mixture of `I^(Theta)` and `Br^(Theta)`
`2I^(Theta) CI_(2) rarr underset("Violet")(I_(2) +) 2CI^(Theta)`
`2Br^(Theta) + CI_(2) rarr underset("Orange yellow")(Br_(2)) + 2CI^(Theta)`
`Br^(Theta)` will be also oxides `I^(Theta)` to `I^(Theta)` .Thus first there will be violet colour in `CGCI_(3)` layer Extract aq layer (containing `Br^(Theta))` and repeat adding `CI_(2)` water and `CHCI_(3)` orange -yellow colour in `CHO_(3)` layer condifirms `Br^(Theta)`