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The chemical name of limestone is calcium carbonate. The substance is frequently discovered in rocks, shells, and minerals. It is employed in agriculture as a soil amendment, and in antacids as a medication. Calcium carbonate, when reacted with acids, produces carbon dioxide gas. It is also a key chemical in the ocean and carbon cycle.
Calcium carbonate, with the chemical formula ca oh, is a substance which can be commonly found in various sources of natural origin: calcareous rocks, lime stones, egg shell and mollusc shell. It is a white, powdery substance with applications in different industries and different reasons.
Calcium carbonate is very commonly used in the agricultural industry, with agricultural lime being the most frequently used product. Farmers supplement their soil with calcium carbonate to enrich its quality, and, as a result, allow for the cultivation of healthier and more abundant crops. The addition of calcium carbonate to soil means that more nutrients are taken up by the plants resulting in increased and healthier crops.
Apart from agriculture, calcium carbonate has been used as an ingredient in antacids. Antacids help neutralise stomach acid, and ease indigestion and heartburn. Calcium carbonate is a readily available and very effective antacid that can neutralize excess acid in the stomach quite rapidly, similar to other medications that contain calcium carbonate (such as Tums).
When calcium carbonate reacts with an ca oh 2 2 acid, a gas is produced and the calcium salt of the acid is produced. This reaction can be noted in the simple 'vulcanization' of rubber (sometimes gone through with students in the lab), in tooth whitening, and in effervescent reactions—think what happens when you pour vinegar (acid) on a piece of chalk (calcium carbonate) and it fizzes and bubbles as carbon dioxide gas boils off.
Importance of calcium carbonate in the carbon cycle and ocean chemistry, to keep an equilibrion in the environment. Calcium carbonate is the main source of the shells of marine organisms, snails, pearls, coral and eggs. When these creatures die, it’s via having their shells and skeletons settle to the bottom of the ocean and build up into huge stores of limestone.
Calcium carbonate dissolves in water to form and ca oh 2 2 hno3 & calcium ions; so it is a source of calcium ions through this process. And it is, in fact, a major aid in controlling the terrestrial climate, staving off the accumulation of greenhouse gases in the atmospheric realm.
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