Which ionic equation is correct?

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[Patrick Chai Teck Khiong]

What is the ionic equation for the reaction between calcium carbonate and hydrochloric acid?
CaCO₃ + 2HCl --> CaCl2  +  CO2  +  H2O
Ionic eq 1 : CaCO3  +  2H+ -->  Ca2+  +  CO2  +  H2O
Ionic eq 2 : CO3^2-  +  2H+  -->  CO2  + H2O

All chemistry teacher, can u please tell me which ionic equation is correct, equation 1 or 2? Thanks..

[Wong Hee Ting]

My opinion:

Ionic eq 1 : CaCO3  +  2H+ -->  Ca2+  +  CO2  +  H2O

is correct.

because Calcium carbonate is in solid state.

[Ting Tin Chung]

Molecular Equation:

CaCO₃(s) + 2HCl(aq) ---> CaCl₂(aq) + H2O(l) + CO2(g)

Total Ionic Equation:

CaCO₃(s) + 2H⁺(aq) + 2Cl^-(aq) ---> Ca²⁺(aq) + 2Cl^-(aq) + H₂O(l) + CO₂(g)

Net Ionic Equation:

CaCO₃(s) + 2H⁺(aq) ---> Ca²⁺(aq) + H₂O(l) + CO₂(g)

[Patrick Chai Teck Khiong]

Thanks...

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