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Three different solutions of oxidising a...

Three different solutions of oxidising agents `KMnO_(4),K_(2)Cr_(2)O_(7) " and "I_(2)` is titrated separately with 0.158 gm of `Na_(2)S_(2)O_(3)`. If molarity of each oxidising agent is 0.1 M and reactions are :
I.`MnO_(4)^(-)+S_(2)O_(3)^(2-) toMnO_(2)+SO_(4)^(2-)`
II `CrO_(7)^(2-)+S_(2)O_(3)^(2-) to Cr^(3+)+SO_(4)^(2-)`
III. `I_(2)+S_(2)O_(3)^(2-) to S_(4)O_(6)^(2-)+I^(-)`

A

Volume of `KMnO_(4)` used is maximum

B

Volume of iodine used is minimum

C

Number of equivalents of `I_(2)` used in titration is maximum

D

Gram equivalent of `Na_(2)S_(2)O_(3)` are same in all the reactions.

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A, B
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I_(2)+S_(2)O_(3)^(2-) to I^(-)+S_(4)O_(6)^(2-)

Three different solution of oxidising agents. K_(2)Cr_(2)O_(7),I_(2), and KMnO_(4) is titrated separately with 0.19g of K_(2)S_(2)O_(3) . The molarity of each oxidising agent is 0.1 M and the reaction are: (i). Cr_(2)O_(7)^(2-)+S_(2)O_(3)^(2-)toCr^(3+)+SO_(4)^(2-) (ii). I_(2)+S_(2)O_(3)^(2-)toI^(ɵ)+S_(4)O_(6)^(2-) (iii). MnO_(4)^(ɵ)+S_(2)O_(3)^(2-)toMnO_(2)+SO_(4)^(2-) (Molecular weight of K_(2)S_(2)O_(3)=190,K_(2)Cr_(2)O_(7)=294,KMnO_(4)=158, and I_(2)=254 mol^(-1)) Which of the following statements is/are correct?

In this reaction 2Na_(2)S_(2)O_(3)+I_(2)=Na_(2)SO_(4)O_(6)=2NaI_(2) acts as:

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

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