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CuSO(4)+2KI to CuI darr+(1)/(2)I(2)+K(2)...

`CuSO_(4)+2KI to CuI darr+(1)/(2)I_(2)+K_(2)SO_(4)`

A

For precipitate formation formation reaction

B

For precipitate dissolution reaction

C

For precipitate exchange reaction

D

For no reaction

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The correct Answer is:
a
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2KI+CuSO_(4) to CuI darr+(1)/(2)I_(2)+K_(2)SO_(4)

CuSO_(4)+2KCN to CuCN darr+(CN)_(2)uarr+K_(2)SO_(4)

CuSO_(4)+2KCN to CuCN darr+(CN)_(2)uarr+K_(2)SO_(4)

In the reaction 2CuSO_(4)+4KI rarr 2Cu_(2)I_(2)+I_(2)+2K_(2)SO_(4) the equivalent weight of CuSO_(4) will be:

Cu^(2+)(aq)+2I^(-) to CuI darr+(1)/(2)I_(2)

In iodometric titrations, an oxidizing agent such as KNnO_(4), K_(2)Cr_(2)O_(7),CuSO_(4),H_(2)O_(2) is allowed to react in neutral medium or in acidic medium with excess of potassium iodide to liberate free iodine Kl+ oxidizon agent to l_(2) Free iodine is titrated against stanard reducing agent usually with sodium thiosulphate i.e., K_(2)Cr_(2)O_(7)+6Kl+7H_(2)SO_(4)toCr_(2)(SO_(4))_(3)+4K_(2)SO_(4)+7H_(2)O+l_(2) 2CuSO_(4)+4Kl to Cu_(2)l_(2)+2K_(2)SO_(4)+l_(2) l_(2)+Na_(2)S_(2)O_(3)to 2Nal+Na_(2)S_(4)O_(6) In iodometric titrations, starch solution is used as an indicator. Starch solution gives blue or violet colour with free iodine. At the end point, blue or violet colour disappear when iodine is completely changed to iodide. What volume of 0.40M Na_(2)S_(2)O_(3) would be required to reach with l_(2) liberated by adding 0.04 mole of Kl to 50 mL to 0.20 M CuSO_(4) solution?

Iodine titration can be iodemotric or iodimetric depending on using iodine directly or indirectly is an oxidising agent in the redox titration. a. Iodimetric titration in which a standard iodine solution is used as an oxidant and iodine is directly or indirectly titrated against a reducing agent. For example. 2CuSO_(4)+4KJtoCu_(2)I_(2)+2K_(2)SO_(4)+I_(2) b. Iodimetric procedures are used for the datermination of strength of reducing agent such as thiosulphates, sulphites, arsenties adn stanous chloride etc. by titrating them against standard solution of iodine in a burette. 2Na_(2)SO_(3)to2 NaI +Na_(2)S_(4)O_(6) Starch is used as indicator near the end point whilch form blue colour complex with I_(3)^(-) . The blue colour disappeams when there is not more of free I_(2) . The volume of KI solutioin used for CuSO_(4) will be

H_(3)PO_(2)+CuSO_(4) to Cu darr+H_(3)PO_(4)+HNO_(3)

In the reaction Cu+ underset((Conc.))(H_(2)SO_(4))to CuSO_(4) +SO_(2) +H_(2)O H_(2)SO_(4) behaves w.r.t. Cu as

K_(4)[Fe(CN)_(6)]+2CuSO_(4)toCu_(2)[Fe(CN)_(6)]darr+2K_(2) SO_(4)

VK JAISWAL ENGLISH-TYPES OF REACTIONS-SUBJECTIVE PROBLEMS
  1. CuSO(4)+2KI to CuI darr+(1)/(2)I(2)+K(2)SO(4)

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  2. Find total number of reagnets which cann produce I(2) from KI solution...

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  3. Find total number of metal cations which are ppted as metal sulphide o...

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  4. Consider the following reaction P(4)+KOH to PH(3)+X How many P-H bon...

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  5. Which of the following species/reagent can reduce Fe^(3+)(aq.) into Fe...

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  6. Find out number ionic compounds which is/are water insoluble at room t...

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  7. Find the value of expression |x-y| for following compounds. where, ...

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  8. Find out total number of coloured compound(s) from following: BaCO(3...

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  9. Find out total number of cation(s) that produce precipitate with aqueo...

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  10. P(4)+SOCl(2) overset(Delta)toProducts Find out total number of non-p...

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  11. What is average oxidation state state of sulphur in product formed in ...

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  12. find out total number of coloured/black water insoluble compound(s) fr...

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  13. Find out total number of compounds which on heating undergo redox reac...

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  14. How many following Ammonium salts will evolve N(2) gas on heating? (...

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  15. How many following metals evolve NO (Nitric oxide) gas with dil. HNO(3...

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  16. Find number of basic radicals among the following cations, which can f...

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  17. Calculate difference between oxidation state of chromium (Cr) in blue ...

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  18. If hydrolysis of interhalogen compound can be represented by following...

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  19. Total number of species that can be oxidzed by acidic permanganate ion...

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  20. How many following metals evolve N(2)O gas with dil. HNO(3) (20%) Cr...

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  21. How many following ammonium salts will evolve NH(3) gas on heating? ...

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