Question: Calculate the heat of combustion of ethane, in the reaction C2H6(g) + 3 1/2O2(g) ? 2CO2(g) + 3H2O(l) where the heats of formation of ethane gas, carbon dioxide gas and water liquid are –84.7 kJ mol-1, -393.5 kJ mol-1 and –285.8 kJ mol-1 respectively.
Options
A : -1559.7 kJ mol-1
B : -155.7 kJ mol-1
C : -159.7 kJ mol-1
D : -559.7 kJ mol-1
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