In qualitative analysis when H(2)S is pa...

In qualitative analysis when `H_(2)S` is passed through an aqueous solution of salt acidified with dil. HCl, a black precipitate is obtained. On boiling the precipitate with dil. `HNO_(3)`, it forms a solution of blue colour. Addition of excess of aqueous solution of ammonia to this solution gives

deep blue precipitate of `Cu(OH)_(2)`

deep blue precipitate of `[Cu(NH_(3))_(4)]^(2+)`

deep blue precipitate of `Cu(NO_(3))_(2)`

deep blue percipitate of `Cu(OH)_(2).Cu(NO_(3))_(2)`

Verified by Experts

The correct Answer is:

15TH GROUP ELEMENTS
NARAYNA|Exercise Level-I (H.W)|36 Videos
15TH GROUP ELEMENTS
NARAYNA|Exercise Level-II (H.W)|41 Videos
15TH GROUP ELEMENTS
NARAYNA|Exercise Level-III|45 Videos
ELECTRO CHEMISTRY
NARAYNA|Exercise SUBJECTIVE QUESTIONS|48 Videos
16 TH GROUP ELEMENTS
NARAYNA|Exercise EXERCISE - 4 NCERT EXAMPLERS/H.O.T.S.|18 Videos

In qualitative analysis when H_(2)S is passed through an aqueous solution of salt acidified with dil. HCL, a block precipitate is obtainned .On boiling the precipitate with dil. HNO_(3) it forms a solution of blue colour . Addition of excess of aqueous solution of ammonia to this solution given ....... .

deep blue precipitate of Cu `(OH)_(2)`

deep blue solution of `[Cu(NH_(3))_(4)]^(2+)`

deep blue solution of Cu `(NO_(3))_(2)`

deep blue solution of Cu `(OH)_(2)`. Cu `(ON_(3))_(2)`

deep blue precipitate of `Cu(OH)_(2)`

deep blue solution of `[Cu(NH_(3))_(4)]^(2+)`

deep blue solution of `Cu(NO_(3))_(2)`

deep blue solution of `Cu(OH)_(2).Cu(NO_(3))_(2)`

limit the concentration of `S^(2-)` ions

increase the solubility of `H_(2)S`

increase the concentration of `S^(2-)` ions

provide extra `Cl^(-)` ions