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Complete the following chemical equation...

Complete the following chemical equation:
(i) `MnO_(4)^(-)(aq)+S_(2)O_(3)^(2-)(aq)+H_(2)O(I)`to
(ii) `MnO_(4)^(-) +NO_(2)^(-)+H^(+)`to

Text Solution

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The correct Answer is:
`(({:(6e^(-)+14h^(+)+,Cr_(2)O_(7)^(2-)to2Cr^(3+)+7H_(2)O),(,[2I^(-)toI_(2)2e^(-)]xx3):})/(14H^(+)6I^(-)+Cr_(2)O_(7)^(2-)to2Cr^(3+)+7H_(2)O+3I_(2)))/`
(ii) `(({:("["5e^(-)+,8H^(+)+MnO_(4)^(-)toMn^(2+)+4H_(2)O"]"xx2),(,"["H_(2)O+NO_(2)^(-)toNO_(3)^(-)+2H^(+)+2e^(-)"]"xx5):})/(6H^(+)+2MnO_(4)^(-)+NO_(2)^(-)to5NO_(3)^(-)+2Mn^(2+)+3H_(2)O))/`
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(a) 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 (b) Explain the following observatons : (i) La^(3+) (Z = 57) and Lu^(3+) (Z = 71) do not show any colour in solutions. (ii) Among the divalent cations in the first series of transition elements, manganese exhibits the maximum paramagnetism. (iii) Cu^(+) ion is not known in aqueous solutions.

Complete the following chemical equations : (i) 8MnO_(4)^(-)+3S_(2)O_(3)^(2-)+H_(2)O to (ii) Cr_(2)O_(7)^(2-)+3Sn^(2+)+14H^(+) to

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

Complete the following chemical equations : (i) SO_(2) + MnO_(4)^(-) + H_(2)O to (ii) F_(2)(g) + H_(2)O (l) to

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(a) Complete the following chemical equations: (i) Cr_(2) O_(7)^(2-) (aq) + H_(2) S(g) + H^(+) (aq) to (ii) Cu^(2+)(aq) + I^(-) (aq) to (b) How would you account for the following : (i) The oxidising power of oxoanions are in the order VO_(2)^(+) lt Cr_(2)O_(7)^(2-) lt Mn O_(4)^(-) (ii) The third ionization enthalpy of manganess (Z = 25) is exceptionally high. (iii) Cr^(2+) is a stronger reducing agent than Fe^(2+) .

Complete the following chemical reactions. (i) PbS(s)+H_(2)O_(2)(aq) to (ii) MnO_(4)^(-)(aq)+H_(2)O_(2)(aq) to (iii) CaO(s)+H_(2)O(g) to (iv) AlCl_(3)(g)+H_(2)O(l)to (v) Ca_(3)N_(2)(s)+H_(2)O(l)to Classify the above into (a) hydrolysis, (b) redox and (c) hdydration reactions.

RESONANCE ENGLISH-D BLOCK ELEMENTS-EXERCISE-3 PART-III
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  2. How would you account for the fact that the transition metals and thei...

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  3. Assign reasons for the following : (i) The enthalpies of atomisatio...

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  4. How would you account for the fact that actinoids exhibit a larger num...

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  5. The weak acid, HA has a Ka of 1×10^(−9) . If 0.1 mol of this acid is ...

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

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  7. How would you account for the following? (i)The atomic radii of the...

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  8. Explain the following : (i) Low spin octahedral complexes of nicke...

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

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  10. How would you account for the following? (i)The atomic radii of the...

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  11. Explain the following observation : (i) Transition elements general...

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  12. What is meant by the 'lanthanide contraction'? Mention one important f...

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

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  14. Complete the following chemical equation: (i) MnO(4)^(-)(aq)+s(2)O(3...

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

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

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  17. How would you account for the following : (i) Among lanthanoids , Ln...

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  18. How would you account for the following ? (i) Many of the transitio...

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  19. (a) Which metal in the first transition series (3d series) exhibits +...

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  20. How would you account for the following? (i) Transition metals exhibi...

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