Respuesta :
Answer:
Explanation:
1) When solid Calcium oxide is added to dilute hydrochloric acid
[tex]CaO(s)+2HCl(aq)[/tex]→[tex]CaCl2(aq)+H2O(l)[/tex]
2) When solid Calcium carbonate is added to dilute Hydrochloric acid
[tex]CaCO(s)+ HCl(aq)[/tex]→[tex]CaCl2(aq)+ H2O(l)+CO2(g)[/tex]
clearly we observe the formation of CO2 from Calcium carbonate whereas no such gas is evolved from Calcium oxide
The difference between the reaction of HCl with calcium carbonate and calcium oxide is that with calcium oxide no carbon dioxide formation takes place, while with calcium carbonate carbon dioxide formation occurs.
The dilute HCl has been the acid that reacts with the base for the formation of salt and water. The addition of calcium oxide has been the resultant of the reaction that results in the formation of calcium chloride and water. The reaction has no brisk effervescence or gas release.
The reaction of Calcium carbonate with dilute HCl results in the same reaction with the formation of calcium chloride and water. However, in the reaction, there has been the release of the bubbles of carbon- dioxide formation.
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