Please help in chemistry!

Question

Use bond energies to determine the ΔH for the combustion of methane (CH4).

Please show work so i know how to do it on my own! Thanks

Answer 1

First, you need to write the balanced equation (for the combustion of methane).

CH₄ + 2 O₂ → CO₂ + 2 H₂O

Next, you would need a table of enthalpies of formation and insert them into the following equation:

Δ H_rxn = ∑ H_products - ∑ H_reactants

Fill in the data (multiplying by the number of moles of each substance) and solve.