Coal gasification is a multistep process to convert coal intocleaner-burning fuels . Inone step, a coal sample reacts with superheated steam:(a) Combine this reaction with the following two to write an overall reaction for the production of methane:(b) Calculate Hrxn for this overall change. (1)CO(g)+3H₂(g)→CH₄(g)+H₂O(g) ΔH°ᵣₓₙ  =206 kJ (2)CO(g)H₂O(g)→CO₂(g)+H₂(g) ΔH°ᵣₓₙ =41 kJ(3) C(coal)+H₂O(g)→CO(g)+H₂(g) ΔH°ᵣₓₙ = 129.7 kJ

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