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Complete the following chemical equation...

Complete the following chemical equations :
(i) `Cr_(2)O_(7)^(2-)+H^(+)+I^(-)to`
(ii) `MnO_(4)^(-)+NO_(2)^(-)+H^(+)to`

Text Solution

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(i) `Cr_(2)O_(7)^(2-)+14H^(+)+6I^(-)to2Cr^(3+)+3I_(2)+7H_(2)O`
(ii) `2MnO_(4)^(-)+5NO_(2)^(-)+6H^(+)to2Mn^(2+)+5NO_(3)^(-)+3H_(2)O`
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U-LIKE SERIES-THE D-AND F-BLOCK ELEMENTS -SHORT ANSWER QUESTIONS (2 marks each)
  1. Why do transition elements show variable oxidation states ? In 3d seri...

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  2. State reasons for the following: (i) Cu (1) ion is not stable in an ...

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

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  4. Complete the following chemical equations : (i) MnO(4)^(-)(aq)+S(2)O...

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  5. Assign reasons for the following: (i) Copper(I) ion is not known in ...

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  6. How would you account for the following: (i) Cr^(2+) is reducing in ...

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  7. Explain the following observations: (i) Generally there is an increa...

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  8. Complete the following chemical reaction equations : (i) MnO(4)^(-)(...

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  9. Explain the following giving reasons : (i) It is difficult to separa...

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  10. The sum of the first and second ionisation enthalpies and those of thi...

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  11. Compare the relative stability of +2 oxidation states in aqueous solut...

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  12. A mixed oxide of iron and chromium FeO.Cr(2)O(3) is fused with sodium ...

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  13. Complete the following reactions : (a) (NH(4))(2)Cr(2)O(7)overset(He...

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  14. Why E^(@) values for Mn, Ni and Zn are more negative than expected ?

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  15. Out of Cu(2)Cl(2) and CuCl(2), which is more stable and why ?

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  16. Although fluorine is more electronegative than oxygen, but the ability...

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  17. Transition metals show high melting points. Why?

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  18. When Cu^(2+) is treated with KI, a white precipitate is formed. Explai...

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  19. When a brown compound of manganese (A) is treated with HCl it gives a ...

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  20. Explain why (i) E^(@) for Mn^(3+)//Mn^(2+) couple is more positive t...

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