Natural gas is mostly methane, but it also contains some ethane and propane. The enthalpies of...
Natural gas is mostly methane, but it also contains some ethane and propane. The enthalpies of combustion of methane, ethane and propane are -810, -1420, and -2030 kJ mol-1, respectively.
(A) Complete the chemical reactions for the combustion of these fuels and calculate the amount of heat released per mole of oxygen and carbon dioxide produced for the three gases using the enthalpy of the reaction.
i. For methane: CH4 + O2 -> ___________
Heat released per mole of O2 consumed = ____________ kJ
Heat released per mole of CO2 = ____________ kJ
ii. For ethane: C2H6 + O2 -> ____________
Heat released per mole of O2 consumed = __________ kJ
Heat released per mole of CO2= __________ kJ
iii. For propane: C3H8 + O2 -> _____________
Heat released per mole of O2 consumed = ___________ kJ
Heat released per mole of CO2 = ___________kJ
B) Using the enthalpy values above, determine the energy generated per gram of fuel.
Heat released per gram of methane = ________
Heat released per gram of ethane = ________
Heat released per gram of propane = ________
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Natural gas is mostly methane, but it also contains some ethane
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