What is the reaction of a small amount of limestone to dilute hydrochloric acid under heating?
This reaction can be spontaneous, entropy for reaction. If heated, the reaction will accelerate.The reaction of heating: the white precipitate disappears rapidly, and a large amount of bubbles are produced at the same time. The gas produced can make the clarified lime water muddy.
Room temperature reaction phenomenon: the white precipitate gradually disappear, and produce a large number of bubbles, and accompanied by a large heat release. The gas can make clear limewater cloudy, because it is a dilute hydrochloric acid, pungent odor is not obvious.
The main component of limestone is calcium carbonate.Calcium carbonate reacts with dilute hydrochloric acid to produce calcium chloride and carbonic acid, which is unstable and readily decomposes into carbon dioxide and water. Therefore, calcium carbonate reacts with dilute hydrochloric acid to produce calcium chloride, carbon dioxide and water.
