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(a) NO(2)^(-) interface in the Ring Test...

(a) `NO_(2)^(-)` interface in the Ring Test of `NO_(3)^(-)` Suggest a chemical method for removal of `NO_(2)^(-)`.
(b)I interface in the Ring of `NO_(3)^(-)`. Suggested chemical reagent that can remove I

Text Solution

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By bolling the mixture with `NH_(4)Cl,NO_(2)^(-)` is decomposed as `N_(2)`
`NaNO_(2)+NH_(4)overset(Delta)toNaCl+N_(2)uarr+2H_(2)O`
`HgCl_(2)`removes l as Hg`l_(2)`
`Hgl_(2)toHgl_(2)darr+2Cl`
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