Write the complete and abbreviated ionic reaction equations Na2co3 + hcl → nacl + h2o + co2 ↑

This reaction refers to exchange reactions.
An exchange reaction is such a reaction as a result of which two complex substances exchange their constituent parts.
The exchange reaction proceeds to the end when: one of the substances falls out in the form of a precipitate, a gas is formed or a little dissociating substance is formed – water.
Na2CO3 + HCl = NaCl + H2O + CO2 ↑
In our case, both gas and water were formed.
Let’s arrange the coefficients.
Na2CO3 + 2HCl = 2NaCl + H2O + CO2 ↑
We write down the complete and abbreviated ionic reaction equations:
2Na ^ (+) + CO3 ^ (2-) + 2H ^ (+) + 2Cl ^ (-) = 2Na ^ (+) + 2Cl ^ (-) + H2O + CO2 ↑
We can reduce similar terms in the right and left sides of the reaction, we get:
CO3 ^ (2-) + 2H ^ (+) = H2O + CO2 ↑