Dissolved oxygen in water is determined by using a redox reaction. Following equations
Channel: Doubtnut
Date: 2020-03-29

Dissolved oxygen in water is determined by using a redox reaction. Following equations describe the procedure. I.`2Mn^(2+)(aq.)+4OH^(-)(aq.)+O_(2)(g) to 2MnO_(2)(S)+2H_(2)O(l)` II. `MnO_(2)(s)+2I^(-)(aq)+4H^(-)(aq)toMn^(2+)(aq.)+I_(2)(aq.)+2H_(2)O(l)` III.`2S_(2)O_(3)^(2-)(aq.)+I_(2)(aq)toS_(4)O_(6)^(2-)(aq.)+2I^(-)(aq.)` How many moles of `S_(2)O_(3)^(2-)` are equivalent to each mole of `O_(2)?