Question

Given the following reactions and subsequent ∆H values what is the ∆H for the reaction below?
4CO2(g) + 2H2O(g) 2C2H2(g) + 5O2(g)

Answer 1

∆H = ∆H (products) - ∆H(reactants)

Answer 2

*∆H(system)= ∆H (products) - ∆H(reactants)