1.

Complete the following equations : (i) `(NH_4)_2 S_2 O_8 + H_2 O + MnSO_4 rarr …..+ …..+ ….` (ii) `S + H_2 SO_4(conc,) overset (Heat)rarr …..+ H_2 O` (iii) `I_2 + SO_2 + H_2 O rarr SO_4^(2-) + …..+ H^(oplus)` (iv) `I_2 + O_3 + H_2 O rarr HIO_3 + .....` (v) `Cr_2 O_7^(2-) + H^(oplus) + SO_2 rarr SO_2^(2-) + H_2 O + .....` (vi) `H_2 S + HNO_3 rarr .... + H_2 O + S`.

Answer» (i) `(NH_(4))_(2) S_(2) O_(8) + MnSO_(4) + 2 H_(2) O rarr (NH_(4))_(2) SO_(4)) + MnO_(2) + 2H_(2) SO_(4)`
(ii) `S + 2 H_(2) SO_(4) rarr 2SO_(2) + 2 H_(2) O`
(iii) `I_(2) + SO_(2) + 2H_(2) O rarr SO_(4)^(2-) + 2 I^(Ө) + 4 H^(oplus)`
(iv) `I_(2) + 5O_(3) + H_(2) O rarr 3HIO_(3) + 5O_(2)`
(v) `Cr_(2) O_(7)^(2-) + 2H^(oplus) + 2 SO_(2) rarr 3SO_(4)^(2-) + H_(2) O + 2 Cr^(3+)`
(vi) `H_(2) S + 2HNO_(3) rarr 2NO_(2) + 2H_(2) O + S ("colloidal")`.


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