Question

Hydrogen and methanol have both been proposed as alternatives to hydrocarbon fuels.

Part C Enter a balanced reaction for the complete combustion of methanol.

Part D Use standard enthalpies of formation to calculate the amount of heat released per kilogram of methanol fuel.

Part F To compare the energy of these fuels to that of octane (C8H18), calculate the energy released per kilogram of octane.

A Part A Hydrogen and methanol have both been proposed as alternatives to hydrocarbon fuels. Enter a balanced reaction for the complete combustion ofhydrogen. You may want to reference (O pages248-284) Chapter 6 while completing this problem. Express your answer as a chemical equation. Identify all of the phases in your answer 2H20) +o20- 2H20 (g) My Answer Give Up Submit Correct The balanced combustion equation is 2H2(g) O2 (g)- 2H20 (g) Part B Use standard enthalpies of formation to calculate the amountofheatreleased perkilogram of hydrogen fuel. Express your answer using four significant figures. amount of heat released 1418x105 kJ/kg Answer Give Up Correct The enthalpy offormation ofwater can be used to calculate the amount of energy released per kilogram offuel. Since only water is presentin a Thus A Hr H20 (kJ/mol) 0.002016 where 0.002010 kg/mol is the molar mass of hydrogen gas. significant Figures Feedback Your answer 142.5-10' 1.425 105 kJ/kg was either rounded differently or used a different number of signi Part C Enter a balanced reaction for the complete combustion ofmethanol. Express your answer as a chemical equation. Identify all of the phases in your answer Submit Answers