Explanation of lime stone powder disappears on adding dilute hydrochloric acids
Answers
limestone is a mixture of the minerals calcite and aroganit , both of which form polymorphic form of calcium carbonate CaCo3. David compounds reacts with HCL as follows (standard acids- base reaction)
CaCo3 (s) + 2HCL (aq) gives rights to CaCl2 (aq) + Co2 (g) + H2O (l)
Carbon dioxide gas is produced and this makes the solution effervesce. An aqueous solution of calcium chloride & water is left behind...
Answer:
Limestone is predominantly Calcium carbonate(CaCo3). When calcium carbonate reacts with 10% solution of HCl. Then Calcium chloride is formed as a salt along with water and carbon dioxide gas (brisk effervescence).
2HCl + CaCO3 → CaCl2 + CO2 +H20
In this reaction, we add hydrogen ions (H+), which will react with the carbonate ion to form hydrogen carbonate HCO3- ions, which are soluble in water and the limestone will dissolve.