AIM: – To identify the given inorganic compound for its acidic and basic radical.
APPARATUS:- Chemical Reagent, Test Tube, Test Tube holder, Spatula
PROCEDURE:-
Preliminary Test:-
| Experiment | Observation | Inference |
| Smelled the salt. | No Ammonical smell. | Ammonium absent. |
| Added dilute hydrochloric acid to the original solution. | No Effect. | Lead(II)may be present. |
| Added hydrogen disulphide, hydrochloric acid to original solution. | No Effect. | Pb(II), Cu(II) , As(III) absent. |
| Added dilute hydrochloric acid, concentrated nitric acid, and boiled solution. Then cooled it and added solid ammonium hydroxide. | No Effect. | Al(III) ,Fe(III) absent. |
| Passed Hydrogen disulphide gas through the above formed solution. | White coloured precipitate formed. | Zn (II) may be present. |
Confirmatory Test:-
| Experiment | Observation | Inference |
| Dissolved the precipitate in concentrated hydrochloric acid and boiled it.Added potassium ferrocyanide to it. | Bluish white coloured precipitate formed. | Zn (II) Confirmed. |
Chemical Equations:-
Ionic equation:-
Zn 2+ + H2S(aq) –> ZnS(s)(White) + 2H+
ZnS(aq) + 2HCl(aq) –> ZnCl2 + 2H+ + S2-
2Zn 2+ + K4[Fe(CN)6] –> Zn2[Fe(CN)6](Bluish White) + 4K+
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Nice
Really awesome
I am here to check out the formula of bluish ppt. And , Now I got it . Thank you so much , keep going in your way !
Very useful. Thanks
Can I get the salt analysis of Zn(OH)2 with acid as well as basic radical test please 🥺