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Dissolved oxygen in water is determined ...

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.)`
If `3xx10^(-3)` moles `O_(2)` is dissolved per litre of water, then what will be the molarity of `I^(-)` produced in the give reaction?

A

`3xx10^(-3)M`

B

`4xx3xx10^(-3)M`

C

`2xx3xx10^(-3)M`

D

`(1)/(2)xx3xx10^(-3)M`

Text Solution

Verified by Experts

The correct Answer is:
b
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