निम्न अभिक्रियाओं को पूर्ण करें|
(i) `NaBr+H_(2)SO_(4) underset(MnO_(2))overset(triangle)to`
(ii) `I_(2)+Na_(2)S_(2)O_(3) to`

Explanation

`(i) NaBr+H_(2)SO_(4) underset(MnO_(2))overset(triangle)to HBr+NaHSO_(4)`
`2HBr+H_(2)SO_(4) to Br_(2)+SO_(2)+2H_(2)O`
`=2NaBr+3H_(2)SO_(4) underset(MnO_(2))overset(triangle)to 2NaHSO_(4)+Br_(2)+SO_(2)+2H_(2)O`
(ii) `I_(2)+Na_(2)S_(2)O_(3) to NaI+SO_(2)+O_(2)`