Iyana Fischer

Chemistry

28 January, 20:57

The enthalpy of combustion for octane (C8H18 (l)), a key component of gasoline, is - 5,074 kJ/mol. This value is the Hrxn for which of the following reactions?

A - 2C8H18 (l) + 25O2 (g) 16CO2 (g) + 18H2O (g)

B - C8H18 (l) + 12.5O2 (g) 8CO2 (g) + 9H2O (g)

C - 16CO2 (g) + 18H2O (g) 2C8H18 (l) + 25O2 (g)

D - 8CO2 (g) + 9H2O (g) C8H18 (l) + 12.5O2 (g)