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Standard reduction electrode potentials ...

Standard reduction electrode potentials of three metals A,B and C are respectively `+0.5V, -3.0V` and `-1.2V`. The reducing powers of these metals are:

A

`C gt B gt A`

B

`A gt C gt B`

C

`B gt C gt A`

D

`A gt B gt C`

Text Solution

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The correct Answer is:
C
Lower the reduction potential , stronger the reducing power.
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ALLEN-ELECTROCHEMISTRY-EXERCISE-05 [A]
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  2. Consider the following reaction, Zn(s)+Cu^(2+) (0.1 M) rarr Zn^(2+) ...

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  3. Standard reduction electrode potentials of three metals A,B and C are ...

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  4. For a cell reaction involving a two electron change, the standrard emf...

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  5. The E(M^(3+)//M^(2+)^@ values for Cr, Mn, Fe and Co are 0.41, + 1....

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  6. In a cell that utilises the reaction. Zn(s) +2H^(+)(aq) rarr Zn^(2+)...

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  7. The limiting molar conductivities overset(o)(wedge) for NaCl, KBr an...

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  8. The standard e.m.f of a cell, involving one electron change is found t...

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  9. Consider the following E^(@) values E^(@) values E(Fe^(3+)//Fe^(2+))^...

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  10. Calculate A(HOAC)^(oo) using appropriate molar conductances of the éle...

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  12. Aluminium oxide may be electrolysed at 1000^(@)C to furnish aluminium ...

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  13. For a spontaneous reaction, DeltaG, equilibrium constant K and E("cell...

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  14. The molar conductivities Lambda(NaOAc)^@ and Lambda(HCI)^@ at infinite...

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  15. Resistance of a conductivity cell filled with 0.1 mol L^(-1) KCl solut...

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  16. At 25^(@)C, {:(Ag+I^(-)rarr,AgI+e,,E^(@) =0.152V),(Agrarr,Ag.^(+)+e,,E...

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  17. The cell, Zn | Zn^(2+) (1M) || (1M) | Cu (E(cell)^(@) = 1.10V), was wa...

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  18. Given E(Cr^(3+)//cr)^@ =- 0.72 V, E(Fe^(2+)//Fe)^@ =- 0.42 V. The pote...

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  19. Given : E(Fe^(3+)//Fe)^(@) = -0.036V, E(FE^(2+)//Fe)^(@)= -0.439V. The...

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  20. The Gibbs energy for the decomposition of Al2O3 at 500^@C is as follow...

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