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. | White coloured precipitate is formed. | Lead(II), Ag(I) may be present. |
| Added precipitate in hot water. | No effect. | Ag(I) may be present. |
Confirmatory Test:-
| Experiment | Observation | Inference |
| Added potassium chromate to the original solution. | Brick red coloured precipitate formed. | Ag(I) confirmed. |
Chemical Equations:-
Ionic equation:-
Ag+ + HCl(aq) –> AgCl(s)(white) + H+
2AgCl(s)(white) + K2CrO4 –> Ag2CrO4(s)(yellow) + 2KCl(aq)
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In the observation column it is said that brick red colour is observed while in the reaction it is yellow.What is the actual observation?
Brick red