What happens when calcium carbonate(marble chips) decompose?
You asked the same set of questions concerning the reaction between CaCO3 and HCl. I am not certain what you mean by the term ” decompose” when it is applied to marble or CaCO3. You must know that there are vast deposits of marble in many locations around the world which have stood there undecomposed for millions of years. So the “decomposition” of marble is not something that is common. Calcium carbonate can undergo change from: 1) dissolving in water – Although marble is considered an insoluble substance, it is slightly soluble in water – especially in water that has been made acidic from the absorption of CO2. This acidic solution reacts with the marble to form calcium bicarbonate which is much more soluble: CaCO3 + H2O.CO2 → Ca(HCO3)2 ( note I have not used the fictitious product H2CO3). This decomposition of marble gradually causes erosion of limestone and results in water hardness in our potable water supplies. 2) Thermal decomposition of marble from fire, which produces CO2 and