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Statement Iodimetric titrations are redo...

Statement Iodimetric titrations are redox titrations.
Explanation The iodine solution acts as an oxidant to reduce the reductant.
`I_(2)rarr2erarr2I^(-)`

A

`S` is correct but `E` is wrong.

B

`S` is wrong but `E` is correct.

C

Both `S` and `E` are correct and `E` is correct explanation of `S`

D

Both `S` and `E` are correct but `E` is not correct explanation of `S`.

Text Solution

Verified by Experts

The correct Answer is:
C
The elecctrons liberated during oxidation of species are used by `I_(2)` to get itself reduced.
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Statement 1: CeO_2 is used for oxidation of aldehyde and ketone statement 2: Aqueous solution of Cuso_4 acts as strong reducing agent.

Oxidation and reduction process involves the transaction of electrons. Loss of electrons is oxidation and the gain of electrons is reduction. It is thus obvious that in a redox reaction, the oxidant is reduced by accepting the electrons and the reductant is oxidised by losing electrons. The reactions in which a species disproportionates into two oxidation states (lower and higher) are called disproportionation reactions. In electrochemical cells, redox reaction is involved, i.e., oxidation takes place at anode and reduction at cathode. In the reaction: I_(2)+2S_(2)O_(3)^(2-) to 2I^(-)+S_(4)O_(6)^(2-)

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P BAHADUR-REDOX REACTIONS-Exercise(8) Statement:Explanation type problems
  1. Statement Oxidation number of Cu in CuH is -1 Explanation Cu is plac...

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  2. Statement Oxidation state of H is +1 in CuH(2) and -1 in CaH(2) Expl...

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  3. Statement Oxygen atom in both O(2) and O(3) has oxidation number zero....

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  4. Statement N atom has two different oxidation states in NH(4)NO(2). E...

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  5. Statement 2H(2)O(2)rarr2H(2)O+O(2) is autoredox change. Explanation ...

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  6. Statement Oxidation number of metals in metal carbonyls is zero. Exp...

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  7. Statement SO(2) can be used as reductant as well as oxidant. Explanat...

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  8. Statement KMnO(4) is strong oxidant whereas Mn^(2+) is weaker reductan...

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  9. Statement VO(2)^(+) and VO^(2+) both are called vanadyl ions. Explana...

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  10. Statement In the reactions , 3As(2)S(3)rarr28HNO(3)+4H(2)Orarr6H(3)AsO...

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  11. Statement In acidic medium equivalent weight of K(2)Cr(2)O(7) is 49. ...

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  12. Statement Iodimetric titrations are redox titrations. Explanation The...

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  13. Statement The redox titarations in which liberated I(2) is used as oxi...

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  14. Statement KMnO(4) acts as oxidant as well as self indicator in its tit...

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  15. Statement The equivalence point refers the condition where equivalents...

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  16. Statement The equivalence weight of KMnO(4) when it is converted to K(...

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  17. Statement The number of equivalent per mole of H(2)S used in its oxida...

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  18. Statement Starch is generally used as absorption indicator in iodimetr...

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  19. Statement The oxidation number of an element in its free or uncombined...

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