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The E(M^(3+)//M^(2+))^(@) values for Cr,...

The `E_(M^(3+)//M^(2+))^(@)` values for Cr, Mn Fe and Co are -0.41, + 1.57, + 0.77 and +1.97V respectively. For which one of these metals the change in oxidation state form +2 to +3 is easiest ?

A

Cr

B

Co

C

Fe

D

Mn

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To determine which metal has the easiest change in oxidation state from +2 to +3, we need to analyze the given standard reduction potentials (E°) for the metals Cr, Mn, Fe, and Co. The values provided are: - Cr³⁺/Cr²⁺: -0.41 V - Mn³⁺/Mn²⁺: +1.57 V - Fe³⁺/Fe²⁺: +0.77 V - Co³⁺/Co²⁺: +1.97 V ### Step-by-Step Solution: ...
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The E_(M^(3+)//M^(2+)^@ values for Cr , Mn, Fe and Co are 0.41, + 1.57 , + 0.77 and +1, 97 V respectively. For which one of these metals the change ub oxidation state from =2 to 3 is easiest :

The E^(o)""_(M^(3+)//M^(2+)) values for Cr, Mn, Fe and Co are –0.41, +1.57,+ 0.77 and + 1.97 V respectively. For which one of these metals the change in oxidation state from +2 to +3 is the easiest?

How many of these metals can show +3 oxidation state also. Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Zn

E^(Theta) value for the couple Cr^(3+)//Cr^(2+) and Mn^(3+)//Mn^(2+) are -0.41 and +1.51 volts respectively. Considering these value select the correct option from the following statements.

If E_(Fe^(3+)//Fe)^(@) and E_(Fe^(2+)//Fe)^(@) are -0.36 V and 0.439 V respectively, then value of E_(Fe^(3+)//Fe^(2+))^(@) is

Given E^(c-)._(Fe^(2+)|Fe) and E^(c-)._(Fe^(3+)|Fe^(2+)) are -0.44 and 0.77V respectively. If Fe^(2+),Fe^(3+) and Fe blocks are kept together, then

E^(c-) for Cr^(3+)+3e^(-) rarr Cr and Cr^(3+)+e^(-) rarr Cr^(2+) are -0.74 V and -0.40V , respectively, E^(c-) for the reaction is Cr^(+2)+2e^(-) rarr Cr

The standard redox potentials for the reactions, MN^(2+) + 2e^(-)to Mn and Mn^(3+) + e^(-) are -1.18V and 1.51V respectively. What is the redox potential for the reaction Mn^(3+)+ 3e^(-) to Mn ?

How would you account for the following? (i)The atomic radii of the metals of the third (5d) series of transition elements are virtually the same as those of the corresponding members of the second (4d) series. (ii)The E^(@) value for the Mn^(3+)//Mn^(2+) couple is much more positive than that for Cr^(3+)//Cr^(2+) couple or Fe^(3+)//Fe^(2+) couple. (iii)The highest oxidation state of a metal is exhibited in its oxide or fluoride.

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^(3+)//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 ?

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