🤓 Based on our data, we think this question is relevant for Professor Laskin & Ren's class at PURDUE.
For propyne (C3H4)
C3H4 + 4 O2 → 3 CO2 + 2 H2O
ΔH˚rxn = –1849.5 kJ/mol
molar mass propyne = 40.062 g/mol
ΔH˚rxn = –46.16 kJ/g
For propylene (C3H6)
C3H6 + 9/2 O2 → 3 CO2 + 3 H2O
The standard enthalpies of formation of gaseous propyne (C3H4), propylene (C3H6), and propane (C3H8) are +185.4, +20.4, and -103.8 kJ/mol, respectively.
Which is the most efficient fuel in terms of heat evolved per unit mass?
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Based on our data, we think this problem is relevant for Professor Laskin & Ren's class at PURDUE.