Question

Given the thermochemical information:
∆Hoformation (H2O (liq) ) = − 285.8 kJ/mol
∆Hoformation (C2H2 (gas)) = − 26.7 kJ/mol
∆Hoformation (CO2 (gas) ) = − 393.5 kJ/mol

The molar heat of combustion of acetylene, C2H2 (gas), is closest to?


A. −1072.3 kJ/mol
B. −706.00 kJ/mol
C. −26.7 kJ/mol
D. −1046.1 kJ/mol
E. −695.2 kJ/mol