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 |
| Added dilute sulphuric acid to given salt. | Gas with smell of rotten eggs evolved. | Sulphide may be present. |
Confirmatory Test:-
| Experiment | Observation | Inference |
| Added a few drops lead(II) of ethanoate solution. | Black precipitate of lead sulphide formed. | Sulphide confirmed. |
Chemical Equations:-
Ionic equation:-
MS(s) + 2H+(aq) –> M2+(aq) + H2S(g)
Pb2+(aq) + S2-(aq)–> PbS(s)
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