Carbonate (CO3)

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AIM: – To identify the given inorganic compound for its acidic and basic radical.

APPARATUS:- Chemical Reagent, Test Tube, Test Tube holder, Spatula


Preliminary Test:-

Experiment Observation Inference
Added dilute sulphuric acid to given salt. Gas with brisk effervescence evolved. Carbonate may be present.

Confirmatory Test:-

Experiment Observation Inference
Pass the above-evolved gas through lime water. Lime water turns milky. Carbonate confirmed.

Chemical Equations:-

Ionic equation:-

CO32-(s) + 2H+(aq) –>H2O(l) + CO2(g)

CO2(g) + Ca(OH)2(aq) –> CaCO3(s)(milky) + H2O(l)

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