C6H8O7 (Citric Acid) +CaCO3 (Calcium carbonate) =?

Citric Acid + Calcium Carbonate = Calcium Citrate + Carbon dioxide + Water.
2C6H8O7 + 3CaCO3 = Ca3(C6H5O7)2 + 3CO2 + 3H2O

something + something + carbon dioxide... sorry im tired.
edit: calcium citrate, water and CO2.
Ca3(C6H5O7)2 + H2O + CO2

Chalk is calcium carbonate CaCO3, citric acid is C6H8O7. The acid would dissolve the chalk and you would get calcium chloride (CaCl2) and carbon dioxide (CO) and water (H2O). The CaCl2 would be dissolved in the solution. If you let the resulting solution evaporate you would get a solid CaCl2, but I wouldn't call it a precipitate since it didn't form in the actual reaction.

Citric Acid + Calcium Carbonate = Calcium Citrate + Carbon dioxide + Water.

Citric Acid Calcium Carbonate

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C6H8O7 (Citric Acid) +CaCO3 (Calcium carbonate) =?