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Which solution produces a black precipit...

Which solution produces a black precipitate when added to an aqueous copper (II) solution?

A

`NH_(3)`

B

`(NH_(4))_(2)S`

C

`K_(2)SO_(4)`

D

`NaOH`

Text Solution

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The correct Answer is:
B
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GRB PUBLICATION-SALT ANALYSIS-H: IInd Group Cations
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  2. What products result when equal volumes of equimolar aqueous solutions...

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  3. Which solution produces a black precipitate when added to an aqueous c...

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  4. Which cation forms an insoluble chloride and an insoluble sulphide?

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  5. Select reaction in which oxidation number of copper is not changed in ...

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  6. Which compound is formed when excess KCN is added to aqueous solution ...

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  7. Consider the following statements: Statement-1: Cu^(2+) ions are red...

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  8. Chocolate brown precipitate is formed with:

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  9. When concentrated HCI is added to an aqueous solution of CoCl(2...

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  10. In the separation of Cu^(2+) and Cd^(2+) of Iind group in qualitative ...

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  11. Compound A,B and C are respectively:

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  12. Sometimes yellow turbidity appears while passing H(2)S gas even in sli...

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  13. H(2)S in the presence of HCl precipitates II group but not IV group be...

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  14. Yellow ammonium sulphate solution is a suitable reagent for the separa...

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  15. In which of the following pairs the precipitates are red and black col...

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  17. A metal chloride original solution (i.e, O.S) on mixing with K(2)CrO(4...

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  18. Which of the following in insoluble in dil. HNO(3) but dissolves in aq...

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  19. When small amount of SnCl(2) is added to a solution of Hg^(2+) ions, a...

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  20. Which of the following reagents gives white precipitate with Hg(NO(3))...

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