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An aqueous blue coloured solution of a t...

An aqueous blue coloured solution of a transition metal sulphate reacts with H2S in acidic medium to give a black precipitate A, which is insoluble in warm aqueous solution of KOH. The blue solution an treatment with KI is weakly acidic medium, turns yellow and produces a white precipitate B. Identify the transition metal ion. Write the chemical reactions involved in the formation of A and B.

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Tansition metal is copper Cu.. A-CuS.

(B)-. (Cu)_(-) (I)_(3) (CuSO)_(4)+(H) (S) rarr (CuS)+(H)_(2) (SO)_(4)

black ...
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V PUBLICATION-THE d- AND f- BLOCK ELEMENTS-QUESTION BANK
  1. Explain a. The lowest oxide of a transition metal(Cr,Z=24) is basic wh...

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  2. Hydrated copper sulphate, is blue while anhy drous copper sulphate is ...

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  3. An aqueous blue coloured solution of a transition metal sulphate react...

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  4. Give ionic equations for the oxidation of iodides with KMnO(4) in acid...

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  5. Write ionic equation for the reduction of MnO(4)^(-) to Mn^(2+) by H(2...

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  6. Can lanthanum '(z)=57)' exhibit '+4', oxidation state. Explain?

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  7. Give complete chemical equations for reaction between concentrated HC...

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  8. Explain why (a) '(Ce4+' is a good oxidistng agent whereas '(Sm2+ is a ...

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  9. Explain why the E^(0) value for the (Mn)^(3+) / (Mn)^(2+) couple is mu...

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  10. Complete the table suitably.

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  11. Transition elements show variable oxidation state. a) Do you agree wit...

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  12. Some information regardirg a particular, compound is given below. i) A...

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  13. Write the general outer electronic configuration of d-block elements.

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  14. What is a transition elements?

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  15. Transition elements are

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  16. The first transition element is

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  17. Cr has electronic configuration

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  18. In the first transition series, the highest oxidation state is exhibit...

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  19. Transition elements are colorured

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  20. Transition metals are often paramagnetic due to

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