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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.)`
How many moles of `S_(2)O_(3)^(2-)` are equivalent to each mole of `O_(2)?

A

0.5

B

1

C

2

D

4

Text Solution

Verified by Experts

The correct Answer is:
d
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O_(3)(g)+I^(-)(aq)+H_(2)O(l) to

Identify the oxidants and redutants in the folowing reactions (a) CH_(4)(g)+4CI(g)rarrCCI_(4)(g)+4HCI(g) (b)2H^(+)(aq)+MnO_(2)(S)+C_(2)H_(2)O_(4)(aq)rarrMn^(2+)(aq)+2CO_(2)(g)+2H_(2)O(l) (c )I_(2)(aq)+2S_(2)O_(3)^(2-)(aq)rarr2I^(-)(aq)+S_(4)O_(6)^(2-)(aq) (d) CI_(2)(g)+2Br^(-)(aq)rarr2CI^(-)(aq)+Br_(2)(aq)

Knowledge Check

  • 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.) 8mg of dissolved oxygen will consume:

    A
    `5xx10^(-4)"mol"Mn^(2+)`
    B
    `2.5xx10^(-4)"mol"Mn^(2+)`
    C
    `10^(-3)"mol"Mn^(2+)`
    D
    `2"mol"Mn^(2+)`

  • 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.) What amount of I_(2) will be liberated from 8g dissolved oxygen?

    A
    127g
    B
    254g
    C
    504g
    D
    1008g

  • 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.) Number of which two chemical species will be same in the given procedure?

    A
    `MnO_(2)`
    B
    `I_(2)`
    C
    `I^(-)`
    D
    `S_(2)O_(3)^(2-)`

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    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?

    4M(s) + 8CN^(-) (aq) + 2H_(2)O(aq) +O_(2)(g) to 4[M(CN)_(2)](aq) + 4OH^(-)(aq). Here

    4M(s) + 8CN^(-) (aq) + 2H_(2)O(aq) +O_(2)(g) to 4[M(CN)_(2)](aq) + 4OH^(-)(aq). Here

    4M(s) + 8CN^(-) (aq) + 2H_(2)O(aq) +O_(2)(g) to 4[M(CN)_(2)](aq) + 4OH^(-)(aq). Here

    Observe the following reaction, 2NO_(2)(g) + 2OH^(-)(aq) to NO_(3)^(-)(aq) + H_(2)O (l) + NO_(2)^(-) (aq) in this reaction,

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