Methanol (CH₃OH) has been suggested as a fuel to replace gasoline.

Write a balanced equation for the combustion of methanol, find ΔH°_rxn, and determine the mass of carbon dioxide emitted per kJ of heat produced. Use the information from the previous exercise to calculate the same quantity for octane, C₈H₁₈. How does methanol compare to octane with respect to global warming?

Previous Exercise

Determine the mass of CO₂ produced by burning enough of each fuel to produce 1.00 * 10² kJ of heat. Which fuel contributes least to global warming per kJ of heat produced?

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a. CH.(g) + 2 O2(g) b. C3Hg(g) + 5 O2(g) c. CgHg(I) + 25/2 O2(g) CO2(g) + 2H2O(g) ΔΗxn - 3 CO2(g) + 4H,O(g) ΔHxn = -2043 kJ • 8 CO2(g) + 9 H2O(g) rxn -802.3 kJ – -5074.1 kJ