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Which one of the following salt solution...

Which one of the following salt solutions on reaction with excess of ammonium hydroxide solution gives a deep blue solution ?

A

`FeCl_(3)`(aq)

B

`CuSO_(4)`(aq)

C

`Al_(2)(SO_(4))_(3)`(aq)

D

`ZnSO_(4)`(aq)

Text Solution

Verified by Experts

The correct Answer is:
B
`Cu_(2) + (aq) + 2NH_(3)(aq) + 3H_(2)O(l) rarr Cu(OH)_(2)(s) + 2NH_(4)^(+)(aq)`
The precipitate dissolves in excess ammonia to form a dark blue complex ion:
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ICSE-ANALYTICAL CHEMISTRY-Multiple Choice Questions
  1. Salts of which elements are generally coloured:

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  2. Which one of the following salt solutions on reaction with excess of a...

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  3. Which one of the following salt solutions on reaction with excess sodi...

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  4. The precipitate of which of the following compounds is soluble in exce...

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  5. Which one of the following salt solutions on reaction with excess of a...

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  6. Choose the correct answer from the options given below : Hydroxide o...

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  7. The hydroxide which is soluble in excess of NaOH is .............

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  8. Name the reagent from the following which can be used to distinguish z...

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  9. The oxide and hydroxide of which metal is amphoteric:

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  10. Choose the correct answer from the options given below : Anhydrous ...

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  11. A chloride which forms a precipitate that is soluble in excess of ammo...

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  12. A solution of the compound which gives a dirty green precipitate with ...

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  13. Which soln. becomes a deep/inky blue colour when excess of ammonium hy...

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  14. The questions below refer to the following salt solutions listed A to ...

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  15. The salt which in soln. gives a pale green precipitate with NaOH soln....

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  16. Find the odd one with reasons [valency is not a ceriterion]: Al(OH)(3)...

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  17. The hydroxide of this metal is soluble in sodium hydroxide :

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  18. Name the gas in the following : The gas evolved on reaction of Alum...

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