Arnold K H Tan's answer to kim Yeon Jae's Secondary 3 A Maths question.
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Carbon dioxide dissolves to form the weak acid hydrogen carbonate, which reacts with limewater to form a white ppt, CaCO3 (s). Concise answer: carbon dioxide forms the white precipitate of calcium carbonate. Excess carbon dioxide dissolves in water and reacts with CaCO3 to form soluble calcium bicarbonate (or calcium hydrogencarbonate).
Date Posted:
6 years ago
*minor correction: carbon dioxide reacts with limewater to form the white precipitate, CaCO3.
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