Chemistry - Enthalpy reactions
posted by Rose Bud .
What is the reaction enthalpy for CaCO3(s) --> CaO(s) + CO2(g)?
should i be using a enthalpy reaction table?
Yes. Use the delta Ho formation tables.
dHrxn = (n*dH products) - (n*dH reactants)
perfect, i got a positive 178.3 kj/mol, which makes since because CaCO3 releases a lot of energy when it breaks apart, so there was more energy released when breaking apart then needed to originally form CaCO3
Is that good? A +178.3 kJ for dHo means it is an endothermic reaction
2 NO + O2 -> 2NO2