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CaCO3 + HCl →→ CaCl₂ + CO₂ + H₂O
2

User Aravindan
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The balanced equation of CaCO3 + HCl → CaCl2 + H2O + CO2 is CaCO3 (s) + 2HCl(aq) → CaCl2 (s) + H2O(aq) + CO2(g). Balancing a chemical equation depends on the law of conservation of mass
User Janosdivenyi
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