Consider the combustion of 1 mole methane (CH4) in air at an equivalence ratio o

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Consider the combustion of 1 mole methane (CH4) in air at an equivalence ratio of 1.0.

a) Write the reaction equation assuming complete combustion and Determine the Enthalpy for this reaction

Oct 16th, 2017

Consider the combustion of 1 mole methane (CH4) in air at an equivalence ratio of 1.0.

a) Write the reaction equation assuming complete combustion and Determine the Enthalpy for this reaction

Answer:

Reaction equation assuming complete combustion for methane:

CH4(g) + 2(O2(g) + 3.76N2(g) → CO2(g) + 2H2O(l) + 7.52N2(g)

Enthalpy of Reaction for this reaction may be calculated:

∆H = 2∆Hof(H2O) + ∆Hof(CO2) - ∆Hof(CH4)

From the table:

∆Hof(H2O) = -285.830 kJ/mol

∆Hof(CO2) = -393.509 kJ/mol

∆Hof(CH4) = -74.87 kJ/mol

∆H =  2 * (-285.830 kJ/mol) + (-393.509 kJ/mol) – (-74.87 kJ/mol) = -890.299 kJ/mol


Nov 30th, 2014

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