Home
Class 12
CHEMISTRY
A solution contains Fe^(3+), Fe^(2+) and...

A solution contains `Fe^(3+), Fe^(2+) and I^(-)` ions. This solution was treated with iodine at `35^(@)C`.
`E_(Fe^(3+)|Fe^(2+))^(@)=+0.77V and E_(I_(2)|2I^(-))^(@)=+-.536V`. The favourable redox reaction is -

A

`I_(2)` will be reduced to `I^(-)`

B

there will be bo redox reaction

C

`I^(-)` will be oxidised to `I_(2)`

D

`Fe^(2+)` will be oxidised to `Fe^(3+)`

Text Solution

Verified by Experts

The correct Answer is:
C
The standard reduction potential of `Fe^(3+)|Fe^(2+)` system is higher than that of `I_(2)|I^(-)` system. Thus `Fe^(3+)` gets reduced and `I^(-)` gets oxidised.
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • ELECTROCHEMISTRY

    CHHAYA PUBLICATION|Exercise ENTRANCE QUESTION BANK (AIIMS)|10 Videos

  • ELECTROCHEMISTRY

    CHHAYA PUBLICATION|Exercise SOLVED NCERT EXEMPLAR PROBLEMS (Multiple Choice Question)(Single Correct Type)|17 Videos

  • ELECTROCHEMISTRY

    CHHAYA PUBLICATION|Exercise ENTRANCE QUESTION BANK (JEE-MAIN)|10 Videos

  • D - AND F - BLOCK ELEMENTS

    CHHAYA PUBLICATION|Exercise PRACTICE SET 8 (Answer the following questions)|10 Videos

  • ENVIRONMENTAL CHEMISTRY

    CHHAYA PUBLICATION|Exercise PRACTICE SET 14(Answer the following questions)|6 Videos

Similar Questions

Explore conceptually related problems

Between Fe and Mn which can be converted to +2 oxidation state easily ? Given : E_(Fe^(2+)|Fe)^(@) =-0.44" V & "E_(Mn^(2+)|Mn)^(@)= - 1.20 V

Can Fe^(2+) be produced in the reaction of Fe with 1(M) HCl solution? Explain. Given : E_(Fe^(2+)|Fe)^(@)=-0.44V

Knowledge Check

  • An aqueous solution contains H^+, Ag^+, Fe^(2+), Zn^(2+) ions. The ion that will be reduced first at cathode is

    A
    `H^+`
    B
    `Ag^+`
    C
    `Fe^(2+)`
    D
    `Zn^(2+)`

  • The standard free energy of the reaction Fe(s)+Sn^(2+)(aq, 1M)rarr Fe^(2+)(aq, 1M)+Sn(s) is ("given : at "25^(@)C, E_(Fe^(2+)|Fe)^(@)=-0.44V and E_(Sn^(2+)|Sn)^(@)=-0.14V)-

    A
    `-"193 kJ.mol"^(-1)`
    B
    `-"57.9 kJ.mol"^(-1)`
    C
    `+"115.8 kJ.mol"^(-1)`
    D
    `+"96.5 kJ.mol"^(-1)`

  • Given, E_(Cu^(2+)|Cu)^(@)=+0.34V, E_(Fe^(3+)|Fe)^(@)=-0.036V,E_(I_(2)|2I^(-))^(@)=+0.54V and E_(Br_(2)|2Br^(-))^(@)=+1.06V . Which of the following statement is incorrect -

    A
    `Fe^(3+)` ion is reduced by `I^(-)`
    B
    `Cu^(2+)` is reduced by `Fe`
    C
    `Br^(-)` ion is oxidised by `I_(2)`
    D
    `Cu^(2+)` is reduced by `I^(-)`

    • Similar Questions

    Explore conceptually related problems

    If Fe is allowed to react with 1(M) HCl solution, will Fe be oxidised to Fe^(2+)? E_(Fe^(+2)|Fe)^(@)=-0.44V

    Explain why Fe^(3+) is more stable than Fe^(2+) ion.

    Among Fe^(2+) and Fe^(3+) , which is more stable ? Why ?

    In aqueous solution, which gives Fe^(3+) ion -

    In aqueous solution, which gives Fe^(3+) ion -

    Home
    Profile