dHo rxn = (n*dHo products) - (dHo reactants)
Substitute and solve. Post your work if you get stuck.
You will need to look up the dHo for each component. You can find these in tables in your text or online.
Find the ΔHr0 for the reaction:
Na2CO3(s) +2HNO3(aq) → 2NaNO3(s) +CO2(g) +H2O(l)
ΔHr0=+125.7kJ
ΔHr0=-67.2kJ
ΔHr0=-45.3kJ
ΔHr0=-140.0kJ
ΔHr0=+105.8kJ
3 answers
WHAT IS THE ANSWER
-67.2 KJ