Question

For the reaction, aA + bB → cC + dD, write the expression for enthalpy change of reaction in terms of enthalpies of formation of reactants and products.

Answer 1

aA + bB → cC + dD ΔrH = ?

Δ_rH⁰ = (cΔ_rH⁰_(C) + dΔ_rH⁰_(D)) - (aΔ_rH⁰(A) + bΔ_rH⁰_(B))