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Cr(2)O(7)^(2-)+Xoverset(H^(o+))rarrCr^(3...

`Cr_(2)O_(7)^(2-)+Xoverset(H^(o+))rarrCr^(3+)+H_(2)O+ "oxidised product" of X, X` in the above reaction cannot be

A

`C_(2)O_(4)^(2-)`

B

`Fe^(2+)`

C

`SO_(4)^(2-)`

D

`S^(2-)`

Text Solution

Verified by Experts

The correct Answer is:
C
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Cr_(2)O_(7)^(2-)overset(H^(+))rarrCr^(3+) , Eq. wt. of Cr_(2)O_(7)^(2-) is :-

H_(2)O is oxidised to O_(2) by :

Cr_(2)O_(7)^(-2)+I^(-)+H^(+)rarrCr^(+3)+I_(2)+H_(2)O The equivalent weight of the reductant in the above equation is :- (At. wt. of Cr = 52, I = 127)

For the redox reaction: Cr_(2)O_(7)^(2-)+H^(o+)+NirarrCr^(3+)+Ni^(2)+H_(2)O The correct coefficient of the reactants for the balanced reaction are:

For the redox reaction Cr_(2)O_(7)^(-2)+H^(+)+Ni rarr Cr^(3)+Ni^(2+)+H_(2)O The correct coefficents of the reactions for the balanced reaction are

Cr_(2)O_(7)^(2-) + 14H^(+) to I_(2) + 2Cr^(3+) + 7H_(2)O Which ions are not in balanced position in above reaction?

AAKASH INSTITUTE- ALCOHOLS, PHENOLS AND ETHERS-Assignment Section -D (Assertion - reason type question)
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  10. A : Grignard's reagent is prepared in the presence of ether . R :...

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  11. A : CH(3) - underset(CH(3))underset(|)overset(CH(3))overset(|)(C)-CH=...

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  12. A : Two moles of Grignard reagent is consumed in the formation of ter...

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  13. A : CH(3)-underset(CH(3))underset(|)overset(CH(3))overset(|)(C)-O-CH...

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  14. A : Ortho - cresol is weaker acidic than meta-cresol . R : It is d...

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  15. A : Among all ortho halophenol , fluorophenol is least acidic . R ...

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  16. A : In esterification reaction alcohol act as nucleophile . R : ...

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  17. A : Phenol is manufactured by Dow 's pocess. R : It involves the ...

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  18. A : Primary alcohol is prepared by the reaction of primary amine with ...

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