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Complete the following chemical equation...

Complete the following chemical equations :
(i) `MnO_(4)^(-)(aq)+S_(2)O_(3)^(2-)(aq)+H_(2)O(l)to`
(ii) `Cr_(2)O_(7)^(2-)(aq)+Fe^(2+)(aq)+H^(+)(aq)to`

Text Solution

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The completed equations are given as under :
(i) `8MnO_(4)^(-)(aq)+3S_(2)O_(3)^(2-)(aq)+H_(2)O(l)to8MnO_(2)(s)+6SO_(4)^(2-)(aq)+2OH^(-)(aq)`
(ii) `Cr_(2)O_(7)^(2-)(aq)+14H^(+)(aq)+6Fe^(2+)(aq)to2Cr^(3+)(aq)+7H_(2)O(l)+6Fe^(3+)(aq)`
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U-LIKE SERIES-THE D-AND F-BLOCK ELEMENTS -SHORT ANSWER QUESTIONS (2 marks each)
  1. State reasons for the following: (i) Cu (1) ion is not stable in an ...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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  16. Transition metals show high melting points. Why?

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

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

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

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  20. With the help of ionic equations, describe what happens when (i) pH ...

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