Like OH^- ions give oxygen and water at anode after getting discharged (during electrolysis), what do the following ions give as products after discharge at anode =>>>
(i) SO₄^-2 ions
(ii) NO₃^- ions
(iii) I^- ions (Iodide/Iodine ions)

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Solution

$I f s u l p h a t e i o n d i s c h a r g e s, i t g i v e s 2 S {O_{4}}^{2 -} \to S_{2} {O_{8}}^{2 -} + 2 e^{-} I f n i t r a t e i o n i s d i s c h a r g e d a l o n g w i t h O H^{-}, i t f o r m s a m m o n i a a n d o x y g e n N {O_{3}}^{-} + 3 O H^{-} \to N H_{3} + 3 O_{2} I f i o d i d e i s d i s c h a r g e d i t f o r m s I_{2} 2 I^{-} \to I_{2} + 2 e^{-}$

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