Question

what is the reason for formation of calcium carbonate​

Answer 1

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When carbon dioxide is passed in excess it leads to the formation of calcium hydrogen-carbonate.

On a large scale, it is prepared by passing carbon dioxide gas through calcium hydroxide (slaked lime). However, if carbon dioxide is passed in excess, it forms the soluble calcium hydrogen-carbonate.

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Answer 2

Answer:

When carbon dioxide is passed in excess it leads to the formation of calcium hydrogen-carbonate.

On a large scale, it is prepared by passing carbon dioxide gas through calcium hydroxide (slaked lime). However, if carbon dioxide is passed in excess, it forms the soluble calcium hydrogen-carbonate.