Is Na2CO3 H2O endothermic or exotermic reaction?

Answer 1

If formed out of elements C + O2 it is exothermic (heat, fire);

But as degradation of complex compounds it depends on the compound used and other product formed, but a lot of degradations are endothermic (needs high temperatures and stops after heating is stopt, it cools 'itself' down)

Answer 2

Dissolving CO2 is exothermic

Answer 3

Cause your mom is a horrible cook

Answer 4

Dissolution is an exothermic reaction.