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Account for the following : The E^(0)...

Account for the following :
The `E^(0)` value for the `Mn^(3+)|Mn^(2+)` couple is much more positive than that for the `Cr^(3+)|Cr^(2+)` couple.

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Why is the E^(0) value for the Mn^(3+)|Mn^(2+) couple much more positive than that for Cr^(3+)|Cr^(2+) or Fe^(3+)|Fe^(2+) ? Explain.

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CHHAYA PUBLICATION-D - AND F - BLOCK ELEMENTS -SOLVED CBSE SCANNER
  1. Account for the following : Zn is not considered as a transition el...

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  2. Account for the following : Transition metals form a large number o...

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  3. Account for the following : The E^(0) value for the Mn^(3+)|Mn^(2+)...

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  4. With reference to structural variability and chemical reactivity, writ...

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  5. Name a member of the lanthanoid series which is well known to exhibit ...

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  6. Complete the following equation : MnO(4)^(-)+8H^(+)+5e to

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  7. Out of Mn^(3+) & Cr^(3+), which is more paramagnetic and why ? (Atomi...

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  8. Suggest reasons for the following features of transition metal chemist...

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  9. What is lanthanoid contraction ? What are consequeces of lanthanoid co...

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  10. Describe the preparation of potassium permanganate. How does the acidi...

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  11. Describing the oxidising action of potassium dichromate and write the ...

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  12. When chromite ore FeCr(2)O(4) is fused with NaOH in presence of air, a...

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  13. When chromite ore FeCr(2)O(4) is fused with NaOH in presence of air, a...

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  14. Complete the following chemical equations : 8MnO(4)^(-)+3S(2)O(3)^(...

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  15. Complete the following chemical equations : Cr(2)O(7)^(2-)+3Sn^(2+)...

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  16. Given reasons : Mn shows the highest oxidation state of + 7 with ox...

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  17. Given reasons : Actinoids show irregularities in their electronic c...

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  18. On heating copper turnings with conc. H(2)SO(4), a colourless gas with...

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  19. Account for the following : Mn(2)O(7) is acidic whereas MnO is basi...

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  20. Account for the following : Zr and Hf exhibit similar properties.

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