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Because calcium carbonate is a base, depending on the pH of the base, it will either increase or decrease the pH of the calcium carbonate very slightly.It will probably have â¦ little to no noticeable effects. 3 people found this useful. Graham Howarth.t is found naturally in limestone and  in seashells.   â¦    vCalcium carbonate reacts with acids, releasing carbon  dioxide:   v    vCalcium carbonate will react with water that is saturated with  carbon dioxide to form the soluble calcium bicarbonate.
Calcium carbonate is a chemical compound with the formula CaCO3. It is a common substance found in rocks as the minerals calcite and aragonite (most notably as limestone, which contains both of those minerals) and is the main component of pearls and the shells of marine organisms, snails, and eggs.