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Using data tabulated below, calculate ΔG r° at 25°C for
C2H4 (g) + 3 O2 (g) → 2 CO2 (g) + 2 H2O (l).
Species ΔHf° (kJ mol –1) S° (J K –1 mol –1) ΔGf° (kJ mol –1)
C2H4(g) 52.26 219.45 68.12
CO2(g) –393.51 213.63 –394.36
H2O(l) –285.83 69.91 –237.18
a) 1314.0 kJ
b) –699.7 kJ
c) –1195.0 kJ
d) –1314.0 kJ
e) –1331.2 kJ
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