ZrO 2 + 2Mg = Zr + 2MgO (2)

Temperature ˚C

Delta (H) kJ

Delta (S) J/K

Delta (G) kJ

0

−102.761

−21.890

−96.781

100

−103.216

−23.330

−94.510

200

−103.509

−24.030

−92.139

300

−103.755

−24.502

−89.712

400

−104.030

−24.943

−87.239

500

−104.395

−25.446

−84.721

600

−104.905

−26.065

−82.146

700

−122.718

−45.359

−78.577

800

−123.712

−46.332

−73.991

900

−120.727

−43.722

−69.435

1000

−122.208

−44.934

−65.001