Acid chemical formula
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Acids and Bases
Compound Formula % by Weight
Acetic acid, glacial CH3COOH 99.5
Formic acid HCOOH 90
Hydrochloric acid HCl 36
Nitric acid HNO3 71
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Answer:
CaO + CO2 ------------> CaCO3 + H2O
CO2 + H2O -------------> H2CO3
Explanation:
A is CaO (calcium oxide) , B is CO2(Carbon dioxide) , C is CaCO3(calcium carbonate) , D is H2CO3( carbonic acid , also known as bicarbonate)
when excess of B is passed through A , then it forms Ca(HCO3)2 {calcium bicarbonate}
CaCO3 + H2O + CO2 -----------> Ca(HCO3)2
remember that CaO should be in aqueous form for the reaction to occur , that means that it should not be solid CaO but Lime Water
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