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CHEMISTRY FORM THREE NOTES. ... (OH) 2) to form an insoluble white precipitate of calcium carbonate. Calcium carbonate reacts with more Carbon(IV) oxide gas to form soluble Calcium hydrogen carbonate. Chemical equation. Ca(OH) 2 (aq) + CO 2 (g) -> CaCO 3 (s) + H 2 O(l) ................
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