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When copper is placed in the atmosphere ...

When copper is placed in the atmosphere for sufficient time, a green crust is formed on its surface. The composition of the green crust is:

A

`CU(OH)_(2)`

B

`CuO`

C

`CuCO_(3)`

D

`CuCO_(3).Cu(OH)_(2)`

Text Solution

Verified by Experts

The correct Answer is:
D
`Cu+H_(2)O+CO_(2) to CUCO_(3).Cu(OH)_(2)`
Green crust of basic copper carbonate is formed.
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RESONANCE-D BLOCK ELEMENTS-EXERCISE-I PART-II
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  2. On heating ZnXl(2).2H(2)O, the compounds obtained is:

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  3. When copper is placed in the atmosphere for sufficient time, a green c...

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  4. The solubility of silver bromide in hypo solution (excess) is due to ...

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  5. In dilute alkaline solution,MnO(4)^(-) changes to:

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  6. Cl2 gas is obtained by various reactions select the reactions from the...

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  7. CuSO(4) solution + lime is called:

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  8. The developer used in photography is an alkaline solution of:

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  9. When acidified solution of K(2)Cr(2)O(7) is shaken with aqeous solutio...

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  10. FeCl(3) dissolves in:

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  11. Which of the following compounds is used as the startingn material for...

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  12. Cr)(3) dissolved in aqueous NaOH to give:

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  13. The final product obtained for the following reaction is: KMnO(4)("ex...

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  14. When AgNo(3)(aq) reacts with excess of iodine, we get:

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  15. ZnO+CoOundersetto(Delta)X,Product X colour is:

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  16. The compound that gets oxidised even on exposure to atmosphere is:

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  17. Select correct statement(s).

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  18. The f-block elements of the periodic table contains those element in w...

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  19. Among the lanthanides the one obtained by synthetic method is

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  20. The most common lanthanoide is :

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