Quicklime reacts with aqueous solution of Hydrochloric Acid gives Calcium Chloride and water. - However, carbon dioxide is not released. - The reaction is an example of an exothermic reaction which doesn't release Carbon dioxide. - Marble, Limestone and Chalk are all types of Calcium Carbonate which when reacted with Hydrochloric acid release Carbon dioxide. - CaO+dil. 2HCl→CaCl2+H2O