Home
Class 12
CHEMISTRY
Which is a stronger reducing agent Cr^(2...

Which is a stronger reducing agent `Cr^(2+)` or `Fe^(2+)` and why?

Text Solution

Verified by Experts

`Cr^(2+)` is a stronger reducing agent than `Fe^(2+)`.
Reason . `E_(Cr^(3+) //Cr^(2+))^(@) `is `-ve ( -0.41V)` whereas `E_(Fe^(3+) //Fe^(2+))^(@)` is `+ve ( + 0.77V)`. Thus, `Cr^(2+)` is easily oxidized to `Fe^(3+)` but `Fe^(2+)` cannot be easily oxidized to `Fe^(3+)` . Hence, `Cr^(2+)` is stronger reducing agent than `Fe^(2+)`
Promotional Banner

Topper's Solved these Questions

  • D- AND F-BLOCK ELEMENTS

    PRADEEP|Exercise NCERT EXERCISES|37 Videos
  • D- AND F-BLOCK ELEMENTS

    PRADEEP|Exercise NCERT EXEMPLAR PROBLEMS(MULTIPLE CHOICE QUESTIONS)|21 Videos
  • D- AND F-BLOCK ELEMENTS

    PRADEEP|Exercise NCERT (QUESTIONS AND EXERCISES WITH ANSERS)|10 Videos
  • CORDINATION COMPOUNDS

    PRADEEP|Exercise Important Questions|28 Videos
  • ELECTROCHEMISTRY

    PRADEEP|Exercise IMPORTANT QUESTIONS FOR BOARD EXAMINATION|25 Videos

Similar Questions

Explore conceptually related problems

{:(E_(M^(2+)//M)^(@),Cr,Mn, Fe, Co, Ni, Cu),(,-0.91,-1.18,-0.44,-0.28,-0.25,+0.34):} From the given data of E^(@) values, answer the following questions : (i) Why is E_((Cu^(2+)//Cu))^(@) value exceptionally positive ? (ii) Why is E_((M^(2+)//M))^(@) vlue highly negative as compared to other elements ? (iii) Which is a stronger reducing agent , Cr^(2+) or Fe^(2+) ? Give reason.

Which is a stronger reducing agent, SbH_(3) " or " BiH_(3) and why ?

Which is a stronger reducing agent , SbH_(3) " or " BiH_(3) and why ?

Which is a stronger reducing agent , SbH_(3) of BiH_(3) , and why ?

Use the data to answer the following and also justify giving rason: {:(," "Cr," "Mn," "Fe," "Co),(E_(M^(2+)//M)^0,-0.91,-1.18,-0.44,-0.28),(E_(M^(2+)//M^(2+))^0,-0.41,+1.57,+0.77,+1.97):} ( a) Which is a stronger redusing agent in aqueous medium Cr^(2) or Fe^(2+) and why ? ( b) Which is the most stable ion in +2 oxidartion and why ?

F_(2) is a stronger oxidising agent than Cl_(2)