Component

Mole fraction, y

Heat of formation $h_f^0$ (KJ/kmol)

Gibbs function (KJ/kmol)

Standard chemical exergy (KJ/kmol)

Carbon dioxide

0.006

−393,520

−394,380

19,870

Nitrogen

0.0119

0

0

720

Methane

0.9356

−74,850

−50,790

831,680

Ethane

0.0403

−84,680

−32,890

1,495,955

Propane

0.0011

−103,850

−23,490

2,131,880

I-butane

0.0012

−134,300

−20,760

2,800,835

N-butane

0.001

−126,150

−15,710

2,805,885

Neo-Pentane

0.0002

−167,800

−14,050

3,453,920

I-Pentane

0.0008

−154,400

−14,050

3,453,920