Calculate the heat of combustion of ethane, in the reaction C2H6(g) + – McqOptions

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1.	Calculate the heat of combustion of ethane, in the reaction C₂H_6(g) + 3 1/2O_2(g) 2CO_2(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.
A.	-1559.7 kJ mol<sup>-1</sup>
B.	-155.7 kJ mol<sup>-1</sup>
C.	-159.7 kJ mol<sup>-1</sup>
D.	-559.7 kJ mol<sup>-1</sup>
Answer» B. -155.7 kJ mol<sup>-1</sup>

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